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Pilati V, Salvador M, Fraile LB, Marqués-Fernández JL, Gomes da Silva F, Fadel M, Antón RL, Morales MDP, Martinez-García JC, Rivas M. Mn-ferrite nanoparticles as promising magnetic tags for radiofrequency inductive detection and quantification in lateral flow assays. NANOSCALE ADVANCES 2024; 6:4247-4258. [PMID: 39114157 PMCID: PMC11302204 DOI: 10.1039/d4na00445k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Accepted: 07/05/2024] [Indexed: 08/10/2024]
Abstract
Lateral flow assays are low-cost point-of-care devices that are stable, easy to use, and provide quick results. They are mostly used as qualitative screening tests to detect biomarkers for several diseases. Quantification of the biomarkers is sometimes desirable but challenging to achieve. Magnetic nanoparticles can be used as tags, providing both visual and magnetic signals that can be detected and quantified by magnetic sensors. In the present work, we synthesized superparamagnetic MnFe2O4 nanoparticles using the hydrothermal coprecipitation route. MnFe2O4 presents low magnetic anisotropy and high saturation magnetization, resulting in larger initial magnetic susceptibility, which is crucial for optimizing the signal in inductive sensors. We functionalized the coprecipitated nanoparticles with citric acid to achieve colloidal stability in a neutral pH and to provide carboxyl groups to their surface to bioconjugate with biomolecules, such as proteins and antibodies. The nanomaterials were characterized by several techniques, and we correlated their magnetic properties with their sensitivity and resolution for magnetic detection in radiofrequency inductive sensors. We considered the NeutrAvidin/biotin model of biorecognition to explore their potential as magnetic labels in lateral flow assays. Our results show that MnFe2O4 nanoparticles are more sensitive to inductive detection than magnetite nanoparticles, the most used nanotags in magnetic lateral flow assays. These nanoparticles present high potential as magnetic tags for the development of sensitive lateral flow immunoassays for detecting and quantifying biomarkers.
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Affiliation(s)
- Vanessa Pilati
- Departamento de Física, Campus de Viesques, Universidad de Oviedo Gijón 33204 Spain
- Complex Fluids Group, Instituto de Física & Faculdade UnB - Planaltina, Universidade de Brasília Brasília 70910-900 Brazil
| | - María Salvador
- Departamento de Física, Campus de Viesques, Universidad de Oviedo Gijón 33204 Spain
- Departamento de Nanociencia y Nanotecnología, Instituto de Ciencia de Materiales de Madrid (ICMM) Madrid 28049 Spain
| | - Leyre Bei Fraile
- Departamento de Física, Campus de Viesques, Universidad de Oviedo Gijón 33204 Spain
| | | | - Franciscarlos Gomes da Silva
- Complex Fluids Group, Instituto de Física & Faculdade UnB - Planaltina, Universidade de Brasília Brasília 70910-900 Brazil
| | - Mona Fadel
- Departamento de Física, Campus de Viesques, Universidad de Oviedo Gijón 33204 Spain
| | - Ricardo López Antón
- Instituto Regional de Investigación Científica Aplicada (IRICA) and Departamento de Física Aplicada, Universidad de Castilla-La Mancha Ciudad Real Spain
| | - María Del Puerto Morales
- Departamento de Nanociencia y Nanotecnología, Instituto de Ciencia de Materiales de Madrid (ICMM) Madrid 28049 Spain
| | - José Carlos Martinez-García
- Departamento de Física, Campus de Viesques, Universidad de Oviedo Gijón 33204 Spain
- Instituto Universitario de Tecnología Industrial de Asturias (IUTA) Gijón 33203 Spain
| | - Montserrat Rivas
- Departamento de Física, Campus de Viesques, Universidad de Oviedo Gijón 33204 Spain
- Instituto Universitario de Tecnología Industrial de Asturias (IUTA) Gijón 33203 Spain
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2
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Papatola F, Slimani S, Peddis D, Pellis A. Biocatalyst immobilization on magnetic nano-architectures for potential applications in condensation reactions. Microb Biotechnol 2024; 17:e14481. [PMID: 38850268 PMCID: PMC11162105 DOI: 10.1111/1751-7915.14481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 04/30/2024] [Accepted: 05/07/2024] [Indexed: 06/10/2024] Open
Abstract
In this review article, a perspective on the immobilization of various hydrolytic enzymes onto magnetic nanoparticles for synthetic organic chemistry applications is presented. After a first part giving short overview on nanomagnetism and highlighting advantages and disadvantages of immobilizing enzymes on magnetic nanoparticles (MNPs), the most important hydrolytic enzymes and their applications were summarized. A section reviewing the immobilization techniques with a particular focus on supporting enzymes on MNPs introduces the reader to the final chapter describing synthetic organic chemistry applications of small molecules (flavour esters) and polymers (polyesters and polyamides). Finally, the conclusion and perspective section gives the author's personal view on further research discussing the new idea of a synergistic rational design of the magnetic and biocatalytic component to produce novel magnetic nano-architectures.
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Affiliation(s)
- F Papatola
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Genoa, Italy
| | - S Slimani
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Genoa, Italy
- CNR, Istituto di Struttura Della Materia, nM2-Lab, Monterotondo Scalo (Roma), Italy
| | - D Peddis
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Genoa, Italy
- CNR, Istituto di Struttura Della Materia, nM2-Lab, Monterotondo Scalo (Roma), Italy
| | - A Pellis
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Genoa, Italy
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3
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Maltoni P, Barucca G, Rutkowski B, Spadaro MC, Jönsson PE, Varvaro G, Yaacoub N, De Toro JA, Peddis D, Mathieu R. Unraveling Exchange Coupling in Ferrites Nano-Heterostructures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304152. [PMID: 37888807 DOI: 10.1002/smll.202304152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 10/10/2023] [Indexed: 10/28/2023]
Abstract
The magnetic coupling of a set of SrFe12 O19 /CoFe2 O4 nanocomposites is investigated. Advanced electron microscopy evidences the structural coherence and texture at the interfaces of the nanostructures. The fraction of the lower anisotropy phase (CoFe2 O4 ) is tuned to assess the limits that define magnetically exchange-coupled interfaces by performing magnetic remanence, first-order reversal curves (FORCs), and relaxation measurements. By combining these magnetometry techniques and the structural and morphological information from X-ray diffraction, electron microscopy, and Mössbauer spectrometry, the exchange intergranular interaction is evidenced, and the critical thickness within which coupled interfaces have a uniform reversal unraveled.
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Affiliation(s)
- Pierfrancesco Maltoni
- Department of Materials Science and Engineering, Uppsala University, Box 35, Uppsala, 751 03, Sweden
| | - Gianni Barucca
- Dipartimento di Scienze e Ingegneria della Materia dell'Ambiente ed Urbanistica-SIMAU, Università Politecnica delle Marche, Ancona, 60131, Italy
| | - Bogdan Rutkowski
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Al. A. Mickiewicza 30, Kraków, 30-059, Poland
| | - Maria Chiara Spadaro
- Dipartimento di Scienze e Ingegneria della Materia dell'Ambiente ed Urbanistica-SIMAU, Università Politecnica delle Marche, Ancona, 60131, Italy
| | - Petra E Jönsson
- Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, SE-751 20, Sweden
| | - Gaspare Varvaro
- Istituto di Struttura della Materia, nM2-lab, Consiglio Nazionale delle Ricerche, Monterotondo Scalo, Rome, 00015, Italy
| | - Nader Yaacoub
- Institut des Molécules et Matériaux du Mans, CNRS UMR-6283, Le Mans Université, Le Mans, F-72085, France
| | - José A De Toro
- Instituto Regional de Investigación Científica Aplicada (IRICA) and Departamento de Física Aplicada, Universidad de Castilla-La Mancha, Ciudad Real, 13071, Spain
| | - Davide Peddis
- Istituto di Struttura della Materia, nM2-lab, Consiglio Nazionale delle Ricerche, Monterotondo Scalo, Rome, 00015, Italy
- Dipartimento di Chimica e Chimica Industriale & INSTM, nM2-Lab, Università degli Studi di Genova, Via Dodecaneso 31, Genova, 1-16146, Italy
| | - Roland Mathieu
- Department of Materials Science and Engineering, Uppsala University, Box 35, Uppsala, 751 03, Sweden
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4
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Baričić M, Maltoni P, Barucca G, Yaacoub N, Omelyanchik A, Canepa F, Mathieu R, Peddis D. Chemical engineering of cationic distribution in spinel ferrite nanoparticles: the effect on the magnetic properties. Phys Chem Chem Phys 2024; 26:6325-6334. [PMID: 38314612 DOI: 10.1039/d3cp06029b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2024]
Abstract
A set of ∼9 nm CoFe2O4 nanoparticles substituted with Zn2+ and Ni2+ was prepared by thermal decomposition of metallic acetylacetonate precursors to correlate the effects of replacement of Co2+ with the resulting magnetic properties. Due to the distinct selectivity of these cations for the spinel ferrite crystal sites, we show that it is possible to tailor the magnetic anisotropy, saturation magnetization, and interparticle interactions of the nanoparticles during the synthesis stage. This approach unlocks new possibilities for enhancing the performance of spinel ferrite nanoparticles in specific applications. Particularly, our study shows that the replacement of Co2+ by 48% of Zn2+ ions led to an increase in saturation magnetization of approximately 40% from ∼103 A m2 kg-1 to ∼143 A m2 kg-1, whereas the addition of Ni2+ at a similar percentage led to an ∼30% decrease in saturation magnetization to 68-72 A m2 kg-1. The results of calculations based on the two-sublattice Néel model of magnetization match the experimental findings, demonstrating the model's effectiveness in the strategic design of spinel ferrite nanoparticles with targeted magnetic properties through doping/inversion degree engineering.
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Affiliation(s)
- Miran Baričić
- Dipartimento di Chimica e Chimica Industriale & INSTM, nM2-Lab, Università degli Studi di Genova, Via Dodecaneso 31, Genova, 1-16146, Italy.
| | - Pierfrancesco Maltoni
- Department of Materials Science and Engineering, Uppsala University, Box 35, Uppsala, 751 03, Sweden.
| | - Gianni Barucca
- Dipartimento di Scienze e Ingegneria della Materia, Dell'ambiente ed Urbanistica, Università Politecnica delle Marche, via Brecce Bianche 12, Ancona, Italy
| | - Nader Yaacoub
- Institut des Molécules et Mateŕiaux du Mans, CNRS UMR-6283, Le Mans Université, F-72085 Le Mans, France
| | - Alexander Omelyanchik
- Dipartimento di Chimica e Chimica Industriale & INSTM, nM2-Lab, Università degli Studi di Genova, Via Dodecaneso 31, Genova, 1-16146, Italy.
- Institute of Structure of Matter (ISM), nM2-Lab, National Research Council (CNR), Via Salaria, Km 29,300 00015 Monterotondo Scalo, Roma, Italy
| | - Fabio Canepa
- Dipartimento di Chimica e Chimica Industriale & INSTM, nM2-Lab, Università degli Studi di Genova, Via Dodecaneso 31, Genova, 1-16146, Italy.
| | - Roland Mathieu
- Department of Materials Science and Engineering, Uppsala University, Box 35, Uppsala, 751 03, Sweden.
| | - Davide Peddis
- Dipartimento di Chimica e Chimica Industriale & INSTM, nM2-Lab, Università degli Studi di Genova, Via Dodecaneso 31, Genova, 1-16146, Italy.
- Institute of Structure of Matter (ISM), nM2-Lab, National Research Council (CNR), Via Salaria, Km 29,300 00015 Monterotondo Scalo, Roma, Italy
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5
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Golosovsky IV, Kibalin IA, Gukasov A, Roca AG, López-Ortega A, Estrader M, Vasilakaki M, Trohidou KN, Hansen TC, Puente-Orench I, Lelièvre-Berna E, Nogués J. Elucidating Individual Magnetic Contributions in Bi-Magnetic Fe 3 O 4 /Mn 3 O 4 Core/Shell Nanoparticles by Polarized Powder Neutron Diffraction. SMALL METHODS 2023; 7:e2201725. [PMID: 37391272 DOI: 10.1002/smtd.202201725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 05/10/2023] [Indexed: 07/02/2023]
Abstract
Heterogeneous bi-magnetic nanostructured systems have had a sustained interest during the last decades owing to their unique magnetic properties and the wide range of derived potential applications. However, elucidating the details of their magnetic properties can be rather complex. Here, a comprehensive study of Fe3 O4 /Mn3 O4 core/shell nanoparticles using polarized neutron powder diffraction, which allows disentangling the magnetic contributions of each of the components, is presented. The results show that while at low fields the Fe3 O4 and Mn3 O4 magnetic moments averaged over the unit cell are antiferromagnetically coupled, at high fields, they orient parallel to each other. This magnetic reorientation of the Mn3 O4 shell moments is associated with a gradual evolution with the applied field of the local magnetic susceptibility from anisotropic to isotropic. Additionally, the magnetic coherence length of the Fe3 O4 cores shows some unusual field dependence due to the competition between the antiferromagnetic interface interaction and the Zeeman energies. The results demonstrate the great potential of the quantitative analysis of polarized neutron powder diffraction for the study of complex multiphase magnetic materials.
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Affiliation(s)
- I V Golosovsky
- National Research Center "Kurchatov Institute", B. P. Konstantinov Petersburg Nuclear Physics Institute, Gatchina, 188300, Russia
| | - I A Kibalin
- Laboratoire Léon Brillouin, CEA-CNRS, CE-Saclay, Gif-sur-Yvette, 91191, France
| | - A Gukasov
- Laboratoire Léon Brillouin, CEA-CNRS, CE-Saclay, Gif-sur-Yvette, 91191, France
| | - A G Roca
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, 08193, Spain
| | - A López-Ortega
- Departamento de Ciencias, Universidad Pública de Navarra, Pamplona, 31006, Spain
- Institute for Advanced Materials and Mathematics INAMAT2, Universidad Pública de Navarra, Pamplona, 31006, Spain
| | - M Estrader
- Departament de Química Inorgànica i Orgànica, carrer Martí i Franqués 1-11, Universitat de Barcelona, Barcelona, 08028, Spain
- Institut de Nanociència i Nanotecnologia IN2UB, carrer Martí i Franqués 1-11, Universitat de Barcelona, Barcelona, 08028, Spain
| | - M Vasilakaki
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 153 10, Agia Paraskevi, Attiki, 15310, Greece
| | - K N Trohidou
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 153 10, Agia Paraskevi, Attiki, 15310, Greece
| | - T C Hansen
- Institut Laue Langevin, 71 avenue des Martyrs, Grenoble, 38000, France
| | - I Puente-Orench
- Institut Laue Langevin, 71 avenue des Martyrs, Grenoble, 38000, France
- Instituto de NanoCiencia y Materiales de Aragón, Zaragoza, 50009, Spain
| | - E Lelièvre-Berna
- Institut Laue Langevin, 71 avenue des Martyrs, Grenoble, 38000, France
| | - J Nogués
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, 08193, Spain
- ICREA, Barcelona, 08010, Spain
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6
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Muscas G, Congiu F, Concas G, Cannas C, Mameli V, Yaacoub N, Hassan RS, Fiorani D, Slimani S, Peddis D. The Boundary Between Volume and Surface-Driven Magnetic Properties in Spinel Iron Oxide Nanoparticles. NANOSCALE RESEARCH LETTERS 2022; 17:98. [PMID: 36219264 PMCID: PMC9554062 DOI: 10.1186/s11671-022-03737-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
Despite modern preparation techniques offer the opportunity to tailor the composition, size, and shape of magnetic nanoparticles, understanding and hence controlling the magnetic properties of such entities remains a challenging task, due to the complex interplay between the volume-related properties and the phenomena occurring at the particle's surface. The present work investigates spinel iron oxide nanoparticles as a model system to quantitatively analyze the crossover between the bulk and the surface-dominated magnetic regimes. The magnetic properties of ensembles of nanoparticles with an average size in the range of 5-13 nm are compared. The role of surface anisotropy and the effect of oleic acid, one of the most common and versatile organic coatings, are discussed. The structural and morphological properties are investigated by X-ray diffraction and transmission electron microscopy. The size dependence of the surface contribution to the effective particle anisotropy and the magnetic structure are analyzed by magnetization measurements and in-field Mössbauer spectrometry. The structural data combined with magnetometry and Mössbauer spectrometry analysis are used to shed light on this complex scenario revealing a crossover between volume and surface-driven properties in the range of 5-7 nm.
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Affiliation(s)
- Giuseppe Muscas
- Department of Physics, University of Cagliari, Cittadella Universitaria Di Monserrato, S.P. 8 Km 0.700, 09042, Monserrato, CA, Italy.
| | - Francesco Congiu
- Department of Physics, University of Cagliari, Cittadella Universitaria Di Monserrato, S.P. 8 Km 0.700, 09042, Monserrato, CA, Italy
| | - Giorgio Concas
- Department of Physics, University of Cagliari, Cittadella Universitaria Di Monserrato, S.P. 8 Km 0.700, 09042, Monserrato, CA, Italy
| | - Carla Cannas
- Università Degli Studi Di Cagliari, Dipartimento Di Scienze Chimiche E Geologiche, and INSTM, Cittadella Universitaria Di Monserrato, S.P. 8 Km 0.700, 09042, Monserrato, CA, Italy
| | - Valentina Mameli
- Università Degli Studi Di Cagliari, Dipartimento Di Scienze Chimiche E Geologiche, and INSTM, Cittadella Universitaria Di Monserrato, S.P. 8 Km 0.700, 09042, Monserrato, CA, Italy
| | - Nader Yaacoub
- IMMM, Le Mans Université, CNRS UMR-6283, Avenue Olivier Messiaen, 72085, Le Mans, France
| | - Rodaina Sayed Hassan
- IMMM, Le Mans Université, CNRS UMR-6283, Avenue Olivier Messiaen, 72085, Le Mans, France
- Department of Physics, Faculty of Science, Lebanese University, Beirut, Lebanon
| | - Dino Fiorani
- Istituto Di Struttura Della Materia-CNR, 00015, Monterotondo Scalo, RM, Italy
| | - Sawssen Slimani
- Dipartimento Di Chimica E Chimica Industriale, Università Degli Studi Di Genova, Via Dodecaneso 31, 1-16146, Genoa, Italy
- Istituto Di Struttura Della Materia-CNR, 00015, Monterotondo Scalo, RM, Italy
| | - Davide Peddis
- Dipartimento Di Chimica E Chimica Industriale, Università Degli Studi Di Genova, Via Dodecaneso 31, 1-16146, Genoa, Italy.
- Istituto Di Struttura Della Materia-CNR, 00015, Monterotondo Scalo, RM, Italy.
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7
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Goswami S, Gupta P, Nayak S, Bedanta S, Iglesias Ò, Chakraborty M, De D. Dependence of Exchange Bias on Interparticle Interactions in Co/CoO Core/Shell Nanostructures. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3159. [PMID: 36144947 PMCID: PMC9502722 DOI: 10.3390/nano12183159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/04/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
This article reports the dependence of exchange bias (EB) effect on interparticle interactions in nanocrystalline Co/CoO core/shell structures, synthesized using the conventional sol-gel technique. Analysis via powder X-Ray diffraction (PXRD) studies and transmission electron microscope (TEM) images confirm the presence of crystalline phases of core/shell Co/CoO with average particle size ≈ 18 nm. Volume fraction (φ) is varied (from 20% to 1%) by the introduction of a stoichiometric amount of non-magnetic amorphous silica matrix (SiO2) which leads to a change in interparticle interaction (separation). The influence of exchange and dipolar interactions on the EB effect, caused by the variation in interparticle interaction (separation) is studied for a series of Co/CoO core/shell nanoparticle systems. Studies of thermal variation of magnetization (M-T) and magnetic hysteresis loops (M-H) for the series point towards strong dependence of magnetic properties on dipolar interaction in concentrated assemblies whereas individual nanoparticle response is dominant in isolated nanoparticle systems. The analysis of the EB effect reveals a monotonic increase of coercivity (HC) and EB field (HE) with increasing volume fraction. When the nanoparticles are close enough and the interparticle interaction is significant, collective behavior leads to an increase in the effective antiferromagnetic (AFM) CoO shell thickness which results in high HC and HE. Moreover, in concentrated assemblies, the dipolar field superposes to the local exchange field and enhances the EB effect contributing as an additional source of unidirectional anisotropy.
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Affiliation(s)
- Suchandra Goswami
- Material Science Research Lab, The Neotia University, Sarisa, D.H. Road, 24 Pgs (South), Sarisha 743368, West Bengal, India
| | - Pushpendra Gupta
- Laboratory for Nanomagnetism and Magnetic Materials (LNMM), School of Physical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute (HBNI), Jatni 752050, India
| | - Sagarika Nayak
- Laboratory for Nanomagnetism and Magnetic Materials (LNMM), School of Physical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute (HBNI), Jatni 752050, India
| | - Subhankar Bedanta
- Laboratory for Nanomagnetism and Magnetic Materials (LNMM), School of Physical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute (HBNI), Jatni 752050, India
- Center for Interdisciplinary Sciences (CIS), National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute (HBNI), Jatni 752050, India
| | - Òscar Iglesias
- Department Física de la Matèria Condensada and IN2UB, Facultat de Física, Universitat de Barcelona, Av. Diagonal 647, 08028 Barcelona, Spain
| | - Manashi Chakraborty
- Material Science Research Lab, The Neotia University, Sarisa, D.H. Road, 24 Pgs (South), Sarisha 743368, West Bengal, India
| | - Debajyoti De
- Material Science Research Lab, The Neotia University, Sarisa, D.H. Road, 24 Pgs (South), Sarisha 743368, West Bengal, India
- Department of Physics, Sukumar Sengupta Mahavidyalaya, State Highway 7, Keshpur, Paschim Medinipur 721150, India
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8
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Zhou W, Chen M, Huang H, Wang G, Luo X, Yuan C, Zhang J, Wu Y, Zheng X, Shen J, Wang S, Shen B. Interfacial Effect on Photo-Modulated Magnetic Properties of Core/Shell-Structured NiFe/NiFe 2O 4 Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2022; 15:1347. [PMID: 35207886 PMCID: PMC8876216 DOI: 10.3390/ma15041347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/26/2022] [Accepted: 02/09/2022] [Indexed: 11/16/2022]
Abstract
Photo-modulated magnetism has become an emerging method for technological applications, such as magneto-optical devices. In this work, by introducing oxygen during rapid thermal annealing, NiFe/NiFe2O4 core/shell nanoparticles were successfully fabricated by pulsed laser deposition. Obvious photo-modulated ferromagnetism was observed in core/shell nanoparticles confined in Al2O3 film. Theoretical and experimental investigations indicate much more photogenerated electrons are captured at the interface of NiFe/NiFe2O4 compared with NiFe nanoparticles due to interfacial effect, resulting in the improved ferromagnetism under light irradiation. This work provides a promising strategy for optical engineering design of optical information storage, high-speed wireless communication, and magneto-optical semiconductor devices.
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Affiliation(s)
- Wenda Zhou
- School of Materials Science and Engineering, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.Z.); (M.C.); (H.H.); (G.W.); (J.Z.); (Y.W.); (X.Z.); (J.S.)
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, China;
| | - Mingyue Chen
- School of Materials Science and Engineering, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.Z.); (M.C.); (H.H.); (G.W.); (J.Z.); (Y.W.); (X.Z.); (J.S.)
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, China;
| | - He Huang
- School of Materials Science and Engineering, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.Z.); (M.C.); (H.H.); (G.W.); (J.Z.); (Y.W.); (X.Z.); (J.S.)
| | - Guyue Wang
- School of Materials Science and Engineering, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.Z.); (M.C.); (H.H.); (G.W.); (J.Z.); (Y.W.); (X.Z.); (J.S.)
| | - Xingfang Luo
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, China;
| | - Cailei Yuan
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, China;
| | - Jingyan Zhang
- School of Materials Science and Engineering, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.Z.); (M.C.); (H.H.); (G.W.); (J.Z.); (Y.W.); (X.Z.); (J.S.)
| | - Yanfei Wu
- School of Materials Science and Engineering, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.Z.); (M.C.); (H.H.); (G.W.); (J.Z.); (Y.W.); (X.Z.); (J.S.)
| | - Xinqi Zheng
- School of Materials Science and Engineering, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.Z.); (M.C.); (H.H.); (G.W.); (J.Z.); (Y.W.); (X.Z.); (J.S.)
| | - Jianxin Shen
- School of Materials Science and Engineering, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.Z.); (M.C.); (H.H.); (G.W.); (J.Z.); (Y.W.); (X.Z.); (J.S.)
| | - Shouguo Wang
- School of Materials Science and Engineering, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.Z.); (M.C.); (H.H.); (G.W.); (J.Z.); (Y.W.); (X.Z.); (J.S.)
| | - Baogen Shen
- School of Materials Science and Engineering, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.Z.); (M.C.); (H.H.); (G.W.); (J.Z.); (Y.W.); (X.Z.); (J.S.)
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences & University of Chinese Academy of Sciences, Beijing 100190, China
- Institute of Rare Earths, Chinese Academy of Sciences, Ganzhou 341000, China
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Magnetic Properties of Bi-Magnetic Core/Shell Nanoparticles: The Case of Thin Shells. MAGNETOCHEMISTRY 2021. [DOI: 10.3390/magnetochemistry7110146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bi-magnetic core/shell nanoparticles were synthesized by a two-step high-temperature decomposition method of metal acetylacetonate salts. Transmission electron microscopy confirmed the formation of an ultrathin shell (~0.6 nm) of NiO and NiFe2O4 around the magnetically hard 8 nm CoFe2O4 core nanoparticle. Magnetization measurements showed an increase in the coercivity of the single-phase CoFe2O4 seed nanoparticles from ~1.2 T to ~1.5 T and to ~2.0 T for CoFe2O4/NiFe2O4 and CoFe2O4/NiO, respectively. The NiFe2O4 shell also increases the magnetic volume of particles and the dipolar interparticle interactions. In contrast, the NiO shell prevents such interactions and keeps the magnetic volume almost unchanged.
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