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Fan Q, Li Z, Wu C, Yin Y. Magnetically Induced Anisotropic Interaction in Colloidal Assembly. PRECISION CHEMISTRY 2023; 1:272-298. [PMID: 37529717 PMCID: PMC10389807 DOI: 10.1021/prechem.3c00012] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/28/2023] [Accepted: 05/30/2023] [Indexed: 08/03/2023]
Abstract
The wide accessibility to nanostructures with high uniformity and controllable sizes and morphologies provides great opportunities for creating complex superstructures with unique functionalities. Employing anisotropic nanostructures as the building blocks significantly enriches the superstructural phases, while their orientational control for obtaining long-range orders has remained a significant challenge. One solution is to introduce magnetic components into the anisotropic nanostructures to enable precise control of their orientations and positions in the superstructures by manipulating magnetic interactions. Recognizing the importance of magnetic anisotropy in colloidal assembly, we provide here an overview of magnetic field-guided self-assembly of magnetic nanoparticles with typical anisotropic shapes, including rods, cubes, plates, and peanuts. The Review starts with discussing the magnetic energy of nanoparticles, appreciating the vital roles of magneto-crystalline and shape anisotropies in determining the easy magnetization direction of the anisotropic nanostructures. It then introduces superstructures assembled from various magnetic building blocks and summarizes their unique properties and intriguing applications. It concludes with a discussion of remaining challenges and an outlook of future research opportunities that the magnetic assembly strategy may offer for colloidal assembly.
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Affiliation(s)
- Qingsong Fan
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Zhiwei Li
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Chaolumen Wu
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Yadong Yin
- Department of Chemistry, University of California, Riverside, California 92521, United States
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2
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Pant D, Pokharel S, Mandal S, KC DB, Pati R. DFT-aided machine learning-based discovery of magnetism in Fe-based bimetallic chalcogenides. Sci Rep 2023; 13:3277. [PMID: 36841922 PMCID: PMC9968303 DOI: 10.1038/s41598-023-30438-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 02/23/2023] [Indexed: 02/27/2023] Open
Abstract
With the technological advancement in recent years and the widespread use of magnetism in every sector of the current technology, a search for a low-cost magnetic material has been more important than ever. The discovery of magnetism in alternate materials such as metal chalcogenides with abundant atomic constituents would be a milestone in such a scenario. However, considering the multitude of possible chalcogenide configurations, predictive computational modeling or experimental synthesis is an open challenge. Here, we recourse to a stacked generalization machine learning model to predict magnetic moment (µB) in hexagonal Fe-based bimetallic chalcogenides, FexAyB; A represents Ni, Co, Cr, or Mn, and B represents S, Se, or Te, and x and y represent the concentration of respective atoms. The stacked generalization model is trained on the dataset obtained using first-principles density functional theory. The model achieves MSE, MAE, and R2 values of 1.655 (µB)2, 0.546 (µB), and 0.922 respectively on an independent test set, indicating that our model predicts the compositional dependent magnetism in bimetallic chalcogenides with a high degree of accuracy. A generalized algorithm is also developed to test the universality of our proposed model for any concentration of Ni, Co, Cr, or Mn up to 62.5% in bimetallic chalcogenides.
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Affiliation(s)
- Dharmendra Pant
- grid.259979.90000 0001 0663 5937Department of Physics, Michigan Technological University, Houghton, MI 49931 USA
| | - Suresh Pokharel
- grid.259979.90000 0001 0663 5937Department of Computer Science, Michigan Technological University, Houghton, MI 49931 USA
| | - Subhasish Mandal
- grid.268154.c0000 0001 2156 6140Department of Physics and Astronomy, West Virginia University, Morgantown, WV 26506 USA
| | - Dukka B. KC
- grid.259979.90000 0001 0663 5937Department of Computer Science, Michigan Technological University, Houghton, MI 49931 USA
| | - Ranjit Pati
- Department of Physics, Michigan Technological University, Houghton, MI, 49931, USA. .,Henes Center for Quantum Phenomena, Michigan Technological University, Houghton, MI, 49931, USA.
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3
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Nguyen QN, Wang C, Shang Y, Janssen A, Xia Y. Colloidal Synthesis of Metal Nanocrystals: From Asymmetrical Growth to Symmetry Breaking. Chem Rev 2022; 123:3693-3760. [PMID: 36547384 DOI: 10.1021/acs.chemrev.2c00468] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Nanocrystals offer a unique platform for tailoring the physicochemical properties of solid materials to enhance their performances in various applications. While most work on controlling their shapes revolves around symmetrical growth, the introduction of asymmetrical growth and thus symmetry breaking has also emerged as a powerful route to enrich metal nanocrystals with new shapes and complex morphologies as well as unprecedented properties and functionalities. The success of this route critically relies on our ability to lift the confinement on symmetry by the underlying unit cell of the crystal structure and/or the initial seed in a systematic manner. This Review aims to provide an account of recent progress in understanding and controlling asymmetrical growth and symmetry breaking in a colloidal synthesis of noble-metal nanocrystals. With a touch on both the nucleation and growth steps, we discuss a number of methods capable of generating seeds with diverse symmetry while achieving asymmetrical growth for mono-, bi-, and multimetallic systems. We then showcase a variety of symmetry-broken nanocrystals that have been reported, together with insights into their growth mechanisms. We also highlight their properties and applications and conclude with perspectives on future directions in developing this class of nanomaterials. It is hoped that the concepts and existing challenges outlined in this Review will drive further research into understanding and controlling the symmetry breaking process.
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Affiliation(s)
- Quynh N. Nguyen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Chenxiao Wang
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Yuxin Shang
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Annemieke Janssen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Younan Xia
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia30332, United States
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4
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A Self-Assembly of Single Layer of Co Nanorods to Reveal the Magnetostatic Interaction Mechanism. NANOMATERIALS 2022; 12:nano12142499. [PMID: 35889723 PMCID: PMC9318953 DOI: 10.3390/nano12142499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/12/2022] [Accepted: 07/19/2022] [Indexed: 12/26/2022]
Abstract
In this work, we report a self-assembly method to fabricate a single layer of Co nanorods to study their magnetostatic interaction behavior. The Co nanorods with cambered and flat tips were synthesized by using a solvothermal route and an alcohol–thermal method, respectively. Both of them represent hard magnetic features. Co nanorods with cambered tips have an average diameter of 10 nm and length of 100 nm with coercivity of 6.4 kOe, and flat-tip nanorods with a 30 nm diameter and 100 nm length exhibit a coercivity of 4.9 kOe. They are further assembled on the surface of water in assistance of surfactants. The results demonstrate that the assembly type is dependent on the magnetic induction lines direction. For Co nanorods with flat tips, most of magnetic induction lines are parallel to the length direction, leading to an assembly that is tip to tip. For Co nanorods with cambered tips, they are prone to holding together side by side for their random magnetic induction lines. Under an applied field, the Co nanorods with flat tips can be further aligned into a single layer of Co nanorods. Our work gives a possible mechanism for the magnetic interaction of Co nanorods and provides a method to study their magnetic behavior.
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5
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Ma Z, Mohapatra J, Wei K, Liu JP, Sun S. Magnetic Nanoparticles: Synthesis, Anisotropy, and Applications. Chem Rev 2021; 123:3904-3943. [PMID: 34968046 DOI: 10.1021/acs.chemrev.1c00860] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Anisotropy is an important and widely present characteristic of materials that provides desired direction-dependent properties. In particular, the introduction of anisotropy into magnetic nanoparticles (MNPs) has become an effective method to obtain new characteristics and functions that are critical for many applications. In this review, we first discuss anisotropy-dependent ferromagnetic properties, ranging from intrinsic magnetocrystalline anisotropy to extrinsic shape and surface anisotropy, and their effects on the magnetic properties. We further summarize the syntheses of monodisperse MNPs with the desired control over the NP dimensions, shapes, compositions, and structures. These controlled syntheses of MNPs allow their magnetism to be finely tuned for many applications. We discuss the potential applications of these MNPs in biomedicine, magnetic recording, magnetotransport, permanent magnets, and catalysis.
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Affiliation(s)
- Zhenhui Ma
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Jeotikanta Mohapatra
- Department of Physics, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Kecheng Wei
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - J Ping Liu
- Department of Physics, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Shouheng Sun
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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6
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Moritz P, Gonon A, Blon T, Ratel-Ramond N, Mathieu F, Farger P, Asensio-Revert JM, Cayez S, Bourrier D, Saya D, Nicu L, Viau G, Leïchlé T, Lacroix LM. Magnetophoresis-Assisted Capillary Assembly: A Versatile Approach for Fabricating Tailored 3D Magnetic Supercrystals. ACS NANO 2021; 15:5096-5108. [PMID: 33621048 DOI: 10.1021/acsnano.0c10215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The fabrication and integration of sub-millimeter magnetic materials into predefined circuits is of major importance for the realization of portable devices designed for telecommunications, automotive, biomedical, and space applications but remains highly challenging. We report here a versatile approach for the fabrication and direct integration of nanostructured magnetic materials of controlled shaped at specific locations onto silicon substrates. The magnetophoresis-assisted capillary assembly of magnetic nanoparticles, either spherical or anisotropic, leads to the fabrication of high-performance Co-based permanent magnets and Fe-based supercrystals. Integrated sub-millimeter magnets as well as millimeter self-standing magnets exhibiting magnetic properties competing with NdFeB-based composites were obtained through this cost- and time-efficient process. The proof-of-concept of electromagnetic actuation of a micro-electromechanical system cantilever by means of these supercrystals highlights their potentiality as efficient integrated magnetic materials within nomadic devices.
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Affiliation(s)
- Pierre Moritz
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, 135 avenue de Rangueil, 31077 Toulouse, France
- LAAS-CNRS, Université de Toulouse, 7 avenue du Colonel Roche, 31077 Toulouse, France
| | - Antoine Gonon
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Thomas Blon
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, 135 avenue de Rangueil, 31077 Toulouse, France
| | | | - Fabrice Mathieu
- LAAS-CNRS, Université de Toulouse, 7 avenue du Colonel Roche, 31077 Toulouse, France
| | - Pierre Farger
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Juan-Manuel Asensio-Revert
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Simon Cayez
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, 135 avenue de Rangueil, 31077 Toulouse, France
| | - David Bourrier
- LAAS-CNRS, Université de Toulouse, 7 avenue du Colonel Roche, 31077 Toulouse, France
| | - Daisuke Saya
- LAAS-CNRS, Université de Toulouse, 7 avenue du Colonel Roche, 31077 Toulouse, France
| | - Liviu Nicu
- LAAS-CNRS, Université de Toulouse, 7 avenue du Colonel Roche, 31077 Toulouse, France
| | - Guillaume Viau
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Thierry Leïchlé
- LAAS-CNRS, Université de Toulouse, 7 avenue du Colonel Roche, 31077 Toulouse, France
- School of Electrical and Computer Engineering, Georgia Tech-CNRS International Research Laboratory, Atlantic Drive, Atlanta, Georgia 30332, United States
| | - Lise-Marie Lacroix
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, 135 avenue de Rangueil, 31077 Toulouse, France
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7
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Enhanced Magnetic Behavior of Cobalt Nano-Rods Elaborated by the Polyol Process Assisted with an External Magnetic Field. NANOMATERIALS 2020; 10:nano10020334. [PMID: 32075285 PMCID: PMC7075111 DOI: 10.3390/nano10020334] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/07/2020] [Accepted: 02/11/2020] [Indexed: 11/17/2022]
Abstract
Cobalt nano-rods with the hexagonal close-packed (hcp) structure were prepared by reduction of the long-chain carboxylate Co (II) precursor in polyol. The application of an external magnetic field (µ0H = 1.25 T) during the nucleation and growth steps resulted in a noticeable modification of the mean aspect ratio (length/diameter) of the particles. The particle morphology was also modified as the nano-rods did not exhibit conical heads at their extremities anymore, which are observed for particles prepared without application of an external magnetic field. Besides, the stacking faults density along the c axis of the hcp structure in the cobalt nano-rods has been found to decrease with the increase in the applied magnetic field. The coercive field of randomly oriented nano-rods increased with the aspect ratio, showing the highest value (i.e., 5.8 kOe at 300 K) for the cobalt nano-rods obtained under the highest applied magnetic field. For partially oriented Co nano-rods in toluene solution, the magnetic properties were significantly enhanced with a coercive field of 7.2 kOe at 140 K, while the magnetization saturation reached 92% of the bulk. The MR/MS value was about 0.8, indicating a good orientation of the anisotropic particles relative to each other, making them suitable for the preparation of permanent magnets via a bottom-up approach.
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8
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Fujieda S, Gaudisson T, Grenèche JM, François M, Ammar S. Synthesis of Magnetic Wires from Polyol-Derived Fe-Glycolate Wires. NANOMATERIALS 2020; 10:nano10020318. [PMID: 32069779 PMCID: PMC7075149 DOI: 10.3390/nano10020318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/03/2020] [Accepted: 02/07/2020] [Indexed: 12/04/2022]
Abstract
Fe-glycolate wires with micrometer-scale lengths can be synthesized by the polyol process. Although the as-produced wires are in the paramagnetic state at room temperature, they are transformed into ferrimagnetic iron oxides and ferromagnetic metallic iron wires by reductive annealing. The shape of the wires is unchanged by reductive annealing, and it is possible to control the magnetic properties of the resulting wire-shaped ferri/ferromagnets by adjusting the annealing conditions. Consequently, the reductive annealing of polyol-derived Fe-glycolate wires is an effective material-processing route for the production of magnetic wires.
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Affiliation(s)
- Shun Fujieda
- Department of Industry and Technology, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan;
- Correspondence:
| | - Thomas Gaudisson
- Department of Industry and Technology, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan;
| | - Jean-Marc Grenèche
- Institut des Molécules et Matériaux du Mans (IMMM), CNRS UMR-6283, Université du Maine, 72085 Le Mans Cedex, France;
| | - Michel François
- Institut Jean Lamour (IJL), CNRS UMR-7198, Université de Lorraine, 54011 Nancy Cedex, France;
| | - Souad Ammar
- Interfaces Traitement Organisation et Dynamique des Systèmes (ITODYS), CNRS UMR-7086, Université Paris, 75205 Paris Cedex, France;
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9
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Ramamoorthy RK, Viola A, Grindi B, Peron J, Gatel C, Hytch M, Arenal R, Sicard L, Giraud M, Piquemal JY, Viau G. One-Pot Seed-Mediated Growth of Co Nanoparticles by the Polyol Process: Unraveling the Heterogeneous Nucleation. NANO LETTERS 2019; 19:9160-9169. [PMID: 31756108 DOI: 10.1021/acs.nanolett.9b04584] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The one-step seed-mediated synthesis is widely used for the preparation of ferromagnetic metal nanoparticles (NPs) since it offers a good control of particle morphology. Nevertheless, this approach suffers from a lack of mechanistic studies because of the difficulties of following in real time the heterogeneous nucleation and predicting structure effects with seeds that are generated in situ. Here, we propose a complete scheme of the heteronucleation process involved in one-pot seed-mediated syntheses of cobalt nanoparticles in liquid polyols, relying on geometrical phase analysis (GPA) of high-resolution high-angle annular dark field (HAADF)-STEM images and in situ measurements of the molecular hydrogen evolution. Cobalt particles of different shapes (rods, platelets, or hourglass-like particles) were grown by reducing cobalt carboxylate in liquid polyols in the presence of iridium or ruthenium chloride as the nucleating agent. A reaction scheme was established by monitoring the H2 evolution resulting from the decomposition of metal hydrides, formed in situ by β-elimination of metal alkoxides, and from the polyol dehydrogenation, catalytically activated by the metal particles. This is a very good probe for both the noble metal nucleation and the heterogeneous nucleation of cobalt, showing a good separation of these two steps. Ir and Ru seeds with a size in the range 1-2 nm were found exactly in the center of the cobalt particles, whatever the cobalt particle shape, and high-resolution images revealed an epitaxial growth of the hcp Co on fcc Ir or hcp Ru seeds. The microstructure analysis around the seeds made evident two different ways of relaxing the lattice mismatch between the seeds and the cobalt, with the presence of dislocations around the Ir seeds and compression zones of the cobalt lattice near the Ru seeds. The relationship between the nature of the nucleating agent, the reaction steps, and the microstructure is discussed.
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Affiliation(s)
- Raj Kumar Ramamoorthy
- Université de Toulouse, UMR 5215 INSA, CNRS, UPS, Laboratoire de Physique et Chimie des Nano-Objets , 135 Avenue de Rangueil , F-31077 Cedex 4 Toulouse , France
| | - Arnaud Viola
- Université de Paris , ITODYS, CNRS, UMR 7086 , 15 rue J.-A. de Baïf , F-75013 Paris , France
| | - Bilel Grindi
- Université de Toulouse, UMR 5215 INSA, CNRS, UPS, Laboratoire de Physique et Chimie des Nano-Objets , 135 Avenue de Rangueil , F-31077 Cedex 4 Toulouse , France
| | - Jennifer Peron
- Université de Paris , ITODYS, CNRS, UMR 7086 , 15 rue J.-A. de Baïf , F-75013 Paris , France
| | - Christophe Gatel
- Centre d'Elaboration de Matériaux et d'Etudes Structurales, CEMES-CNRS , 29 rue Jeanne Marvig , B.P. 94347, 31055 Toulouse , France
| | - Martin Hytch
- Centre d'Elaboration de Matériaux et d'Etudes Structurales, CEMES-CNRS , 29 rue Jeanne Marvig , B.P. 94347, 31055 Toulouse , France
| | - Raul Arenal
- Laboratorio de microscopias avanzadas (LMA) , Instituto de Nanociencia de Aragon (INA) , U. Zaragoza, C/Mariano Esquillor s/n , 50018 Zaragoza , Spain
- ARAID Foundation , 50018 Zaragoza , Spain
- Instituto de Ciencias de Materiales Aragon , CSIC-U. Zaragoza , 50009 Zaragoza , Spain
| | - Lorette Sicard
- Université de Paris , ITODYS, CNRS, UMR 7086 , 15 rue J.-A. de Baïf , F-75013 Paris , France
| | - Marion Giraud
- Université de Paris , ITODYS, CNRS, UMR 7086 , 15 rue J.-A. de Baïf , F-75013 Paris , France
| | - Jean-Yves Piquemal
- Université de Paris , ITODYS, CNRS, UMR 7086 , 15 rue J.-A. de Baïf , F-75013 Paris , France
| | - Guillaume Viau
- Université de Toulouse, UMR 5215 INSA, CNRS, UPS, Laboratoire de Physique et Chimie des Nano-Objets , 135 Avenue de Rangueil , F-31077 Cedex 4 Toulouse , France
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10
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Roca AG, Gutiérrez L, Gavilán H, Fortes Brollo ME, Veintemillas-Verdaguer S, Morales MDP. Design strategies for shape-controlled magnetic iron oxide nanoparticles. Adv Drug Deliv Rev 2019; 138:68-104. [PMID: 30553951 DOI: 10.1016/j.addr.2018.12.008] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 11/20/2018] [Accepted: 12/11/2018] [Indexed: 01/01/2023]
Abstract
Ferrimagnetic iron oxide nanoparticles (magnetite or maghemite) have been the subject of an intense research, not only for fundamental research but also for their potentiality in a widespread number of practical applications. Most of these studies were focused on nanoparticles with spherical morphology but recently there is an emerging interest on anisometric nanoparticles. This review is focused on the synthesis routes for the production of uniform anisometric magnetite/maghemite nanoparticles with different morphologies like cubes, rods, disks, flowers and many others, such as hollow spheres, worms, stars or tetrapods. We critically analyzed those procedures, detected the key parameters governing the production of these nanoparticles with particular emphasis in the role of the ligands in the final nanoparticle morphology. The main structural and magnetic features as well as the nanotoxicity as a function of the nanoparticle morphology are also described. Finally, the impact of each morphology on the different biomedical applications (hyperthermia, magnetic resonance imaging and drug delivery) are analysed in detail. We would like to dedicate this work to Professor Carlos J. Serna, Instituto de Ciencia de Materiales de Madrid, ICMM/CSIC, for his outstanding contribution in the field of monodispersed colloids and iron oxide nanoparticles. We would like to express our gratitude for all these years of support and inspiration on the occasion of his retirement.
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Affiliation(s)
- Alejandro G Roca
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain; Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, E-08193 Barcelona, Spain.
| | - Lucía Gutiérrez
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain; Dept. Química Analítica, Instituto de Nanociencia de Aragón, Universidad de Zaragoza and CIBER-BBN, E-50018 Zaragoza, Spain.
| | - Helena Gavilán
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain.
| | - Maria Eugênia Fortes Brollo
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain.
| | - Sabino Veintemillas-Verdaguer
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain.
| | - María Del Puerto Morales
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain.
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11
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Fiévet F, Ammar-Merah S, Brayner R, Chau F, Giraud M, Mammeri F, Peron J, Piquemal JY, Sicard L, Viau G. The polyol process: a unique method for easy access to metal nanoparticles with tailored sizes, shapes and compositions. Chem Soc Rev 2018; 47:5187-5233. [PMID: 29901663 DOI: 10.1039/c7cs00777a] [Citation(s) in RCA: 200] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
After about three decades of development, the polyol process is now widely recognized and practised as a unique soft chemical method for the preparation of a large variety of nanoparticles which can be used in important technological fields. It offers many advantages: low cost, ease of use and, very importantly, already proven scalability for industrial applications. Among the different classes of inorganic nanoparticles which can be prepared in liquid polyols, metals were the first reported. This review aims to give a comprehensive account of the strategies used to prepare monometallic nanoparticles and multimetallic materials with tailored size and shape. As regards monometallic materials, while the preparation of noble as well as ferromagnetic metals is now clearly established, the scope of the polyol process has been extended to the preparation of more electropositive metals, such as post-transition metals and semi-metals. The potential of this method is also clearly displayed for the preparation of alloys, intermetallics and core-shell nanostructures with a very large diversity of compositions and architectures.
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Affiliation(s)
- F Fiévet
- Université Paris Diderot, Sorbonne Paris Cité, ITODYS, CNRS UMR 7086, 15 rue J.-A. de Baïf, 75205 Paris Cedex 13, France.
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12
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Wang F, Du J, Sun F, Sabirianov RF, Al-Aqtash N, Sengupta D, Zeng H, Xu X. Ferromagnetic Cr 2Te 3 nanorods with ultrahigh coercivity. NANOSCALE 2018; 10:11028-11033. [PMID: 29872797 DOI: 10.1039/c8nr02272k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Ferromagnetic Cr2Te3 nanorods were synthesized by a one-pot high-temperature organic-solution-phase method. The crystalline phases and magnetic properties can be systematically tuned by varying the molar ratio of the Cr and Te precursors. A magnetically hard phase, identified as chemically ordered Cr2Te3, is the dominating one at the precursor ratio between Cr : Te = 1 : 1.2 and 1 : 1.8. A magnetically soft phase, attributed to chemical disorder due to composition inhomogeneity and stacking faults, is present under either Cr-rich or Te-rich synthesis conditions. A large coercivity of 9.6 kOe is obtained for a Cr : Te precursor ratio of 1 : 1.8, which is attributed to the large magnetocrystalline anisotropy of ordered Cr2Te3 nanorods, and verified by density-functional theory calculations. The hard and soft phases sharing coherent interfaces co-exist in a seemingly single-crystalline nanorod, showing an unusual transition from exchange-coupled behavior at higher temperatures to two-phase behavior as the temperature is lowered.
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Affiliation(s)
- Fang Wang
- School of Chemistry and Materials Science of Shanxi Normal University & Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, Linfen 041004, China.
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Mohapatra J, Liu JP. Rare-Earth-Free Permanent Magnets: The Past and Future. HANDBOOK OF MAGNETIC MATERIALS 2018. [DOI: 10.1016/bs.hmm.2018.08.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Fernández-Pacheco A, Streubel R, Fruchart O, Hertel R, Fischer P, Cowburn RP. Three-dimensional nanomagnetism. Nat Commun 2017; 8:15756. [PMID: 28598416 PMCID: PMC5494189 DOI: 10.1038/ncomms15756] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 04/20/2017] [Indexed: 01/18/2023] Open
Abstract
Magnetic nanostructures are being developed for use in many aspects of our daily life, spanning areas such as data storage, sensing and biomedicine. Whereas patterned nanomagnets are traditionally two-dimensional planar structures, recent work is expanding nanomagnetism into three dimensions; a move triggered by the advance of unconventional synthesis methods and the discovery of new magnetic effects. In three-dimensional nanomagnets more complex magnetic configurations become possible, many with unprecedented properties. Here we review the creation of these structures and their implications for the emergence of new physics, the development of instrumentation and computational methods, and exploitation in numerous applications. Nanoscale magnetic devices play a key role in modern technologies but current applications involve only 2D structures like magnetic discs. Here the authors review recent progress in the fabrication and understanding of 3D magnetic nanostructures, enabling more diverse functionalities.
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Affiliation(s)
| | - Robert Streubel
- Division of Materials Sciences, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Olivier Fruchart
- Univ. Grenoble Alpes, CNRS, CEA, Grenoble INP, INAC, SPINTEC, F-38000 Grenoble, France
| | - Riccardo Hertel
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, Department of Magnetic Objects on the Nanoscale, F-67000 Strasbourg, France
| | - Peter Fischer
- Division of Materials Sciences, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.,Department of Physics, UC Santa Cruz, Santa Cruz, California 95064, USA
| | - Russell P Cowburn
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, UK
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McGrath AJ, Cheong S, Henning AM, Gooding JJ, Tilley RD. Size and shape evolution of highly magnetic iron nanoparticles from successive growth reactions. Chem Commun (Camb) 2017; 53:11548-11551. [DOI: 10.1039/c7cc06300h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Monodisperse iron nanoparticles are synthesized via successive seed-mediated growth reactions. By performing additional growth reactions, the nanoparticles’ magnetic character post-surface oxidation is tuned from superparamagnetic to ferromagnetic.
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Affiliation(s)
- A. J. McGrath
- School of Chemistry
- University of New South Wales
- Australia
- Australian Centre for NanoMedicine
- University of New South Wales
| | - S. Cheong
- Electron Microscope Unit
- Mark Wainwright Analytical Centre
- University of New South Wales
- Australia
| | - A. M. Henning
- Boutiq Science Ltd and Ferronova Pty Ltd
- Victoria University of Wellington
- Wellington 6012
- New Zealand
| | - J. J. Gooding
- School of Chemistry
- University of New South Wales
- Australia
- Australian Centre for NanoMedicine
- University of New South Wales
| | - R. D. Tilley
- School of Chemistry
- University of New South Wales
- Australia
- Australian Centre for NanoMedicine
- University of New South Wales
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