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Yustanti E, Noviyanto A, Ikramullah M, Marsillam YA, Taryana Y, Taufiq A. High-performance microwave absorption by optimizing hydrothermal synthesis of BaFe 12O 19@MnO 2 core-shell composites. RSC Adv 2023; 13:27634-27647. [PMID: 37727586 PMCID: PMC10505901 DOI: 10.1039/d3ra05114e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 09/06/2023] [Indexed: 09/21/2023] Open
Abstract
Stealth technology advances in radar-absorbing materials (RAMs) continue to grow rapidly. Barium hexaferrite is the best candidate for RAMs applications. Manganese dioxide (MnO2) is a transition metal with high dielectric loss and can be used as a booster for changing polarization and reducing reflection loss. The advantages of BaFe12O19 and MnO2 can be combined in a core-shell BaFe12O19@MnO2 composite to improve the material's performance. MnO2 composition, temperature, hydrothermal holding time, and sample thickness all have an impact on the core-shell structure. In this study, a core-shell BaFe12O19@MnO2 composite is synthesized in two stages: molten salt synthesis to produce BaFe12O19 as the core and hydrothermal synthesis to synthesize MnO2 as the shell. In the hydrothermal synthesis, BaFe12O19 and KMnO4 were mixed in deionized water using different mass ratios of BaFe12O19 to KMnO4 (1 : 0.25, 1 : 0.5, 1 : 0.75, and 1 : 1). The main goal of the analysis was to figure out how well the hydrothermal synthesis method worked at different temperatures (140 °C, 160 °C, and 180 °C) and holding times (9 h, 12 h, and 15 h). The composite material was subjected to characterization using a vector network analyzer, specifically at thicknesses of 1.5 mm, 2 mm, 2.5 mm, and 3 mm. The hydrothermal temperature and composition ratio of BaFe12O19 : MnO2 are the most influential parameters in reducing reflection loss. Accurate control of the parameters makes a BaFe12O19@MnO2 core-shell composite structure with a lot of sheets. The structure is capable of absorbing 99.99% of electromagnetic waves up to a sample thickness of 1.5 mm. The novelty of this study is its ability to achieve maximal absorptions on a sample with minimal thickness through precise parametric control. This characteristic makes it highly suitable for practical applications, such as performing as an anti-radar coating material. BaFe12O19@MnO2 demonstrates performance as a reliable electromagnetic wave absorber material with simple fabrication, producing absorption at C and X band frequencies.
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Affiliation(s)
- Erlina Yustanti
- Department of Metallurgical Engineering, Faculty of Engineering, Sultan Ageng Tirtayasa University Jl. Jend. Sudirman KM 03 Cilegon 42435 Banten Indonesia
- Center of Excellence, Nanomaterial and Process Technology Laboratory, Faculty of Engineering, Sultan Ageng Tirtayasa University Jl. Jend. Sudirman KM 03 Cilegon 42435 Banten Indonesia
| | - Alfian Noviyanto
- Nano Center Indonesia Jl. PUSPIPTEK Tangerang Selatan 15314 Banten Indonesia
- Department of Mechanical Engineering, Mercu Buana University Jl. Meruya Selatan, Kebun Jeruk Jakarta 11650 Indonesia
| | - Muhammad Ikramullah
- Department of Metallurgical Engineering, Faculty of Engineering, Sultan Ageng Tirtayasa University Jl. Jend. Sudirman KM 03 Cilegon 42435 Banten Indonesia
| | - Yogie Anes Marsillam
- Department of Metallurgical Engineering, Faculty of Engineering, Sultan Ageng Tirtayasa University Jl. Jend. Sudirman KM 03 Cilegon 42435 Banten Indonesia
| | - Yana Taryana
- Research Center for Telecommunication, National Research and Innovation Agency Bandung Indonesia
| | - Ahmad Taufiq
- Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang Jl. Semarang No 5 Malang, 65145 Indonesia
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Yang H, Yang X, Lin J, Yang F, He Y, Lin Q. Effect of Cd 2+ Substitution on Structural-Magnetic and Dielectric Properties of Ni-Cu-Zn Spinel Ferrite Nanomaterials by Sol-Gel. Molecules 2023; 28:6110. [PMID: 37630362 PMCID: PMC10459885 DOI: 10.3390/molecules28166110] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/06/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
CdxNi0.5-xCu0.2Zn0.3Fe2O4 (0 ≤ x ≤ 0.50) ferrite with a spinel structure was prepared using the sol-gel self-propagation method. The effects of Cd2+ doping on the structure, morphology, dielectric, and magnetic properties of Ni-Cu-Zn ferrite were examined using XRD, SEM, EDX, FTIR, MPMS, and dielectric tests. The cubic spinel structure was verified by XRD and FTIR analyses. The crystallite size and particle size information of the samples were obtained with XRD and SEM analysis. The sample particle size belonged to a class of nanoscale materials with a particle size range of 1-100 nm. The minor difference between the grain size and particle size indicated that the sample nanoparticles were composed of numerous microcrystals. The EDX spectra indicated that the samples contained all stoichiometric elements. MPMS was used to measure the hysteresis lines of the samples. According to the hysteresis line, the saturation magnetization intensity (Ms), coercivity (Hc), and magnetic moment (μB) of the sample increased and then decreased with the increase in cadmium concentration. The magnetization strength (Ms) is between 4-67 emu/g, and the coercivity (Hc) is between 9-46 Oe. The curves of the real part of the dielectric constant (ε'), the imaginary part of the dielectric constant (ε″), and the loss factor (tanδ) with frequency were measured in the frequency range 100 Hz-100 kHz by means of an impedance analyzer. The complex modulus spectrum was analyzed to understand the dynamics of the conduction process.
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Affiliation(s)
- Hu Yang
- College of Biomedical Information and Engineering, Hainan Medical University, Haikou 571199, China
- Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology, College of Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - Xingxing Yang
- Department of Civil Engineering, Jiangxi Water Resources Institute, Nanchang 330013, China
| | - Jinpei Lin
- Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology, College of Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - Fang Yang
- College of Biomedical Information and Engineering, Hainan Medical University, Haikou 571199, China
- Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology, College of Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - Yun He
- Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology, College of Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - Qing Lin
- College of Biomedical Information and Engineering, Hainan Medical University, Haikou 571199, China
- Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology, College of Physics and Technology, Guangxi Normal University, Guilin 541004, China
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Magnetic and microwave properties of Co0.5Ni0.5Fe2-Sc O4 (0.0 ≤ x ≤ 0.1) nanosized spinel ferrites. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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4
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Hazarika KP, Borah JP. Role of site selective substitution, magnetic parameter tuning, and self heating in magnetic hyperthermia application: Eu-doped magnetite nanoparticles. RSC Adv 2023; 13:5045-5057. [PMID: 36762080 PMCID: PMC9906981 DOI: 10.1039/d2ra07924k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/12/2023] [Indexed: 02/10/2023] Open
Abstract
Various researchers have provided considerable insight into the fundamental mechanisms behind the power absorption of single-domain magnetic nanoparticles (MNPs) in magnetic hyperthermia applications. However, the role of all parameters pertinent to magnetic relaxation continues to be debated. Herein, to explore the role of magnetic anisotropy with the site selective substitution related to magnetic relaxation has generally been missing, which is critically essential in respective of hyperthermia treatment. Our study unravels contradictory results of rare earth (RE) interaction effects in ferrite to that of recently reported literature. Despite this, rare earth atoms have unique f-block properties, which significantly impact the magnetic anisotropy as well as the relaxation mechanism. Here, we use appropriate Eu doping concentration in magnetite and analyze its effect on the matrix. Furthermore, a positive SAR can effectively reduce the relative dose assigned to a patient to a minimal level. This study indicates that the introduction of Eu ion positively influenced the heating efficiency of the examined magnetite systems.
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Affiliation(s)
- Krishna Priya Hazarika
- Nanomagnetism Group, Department of Physics, National Institute of Technology Nagaland Dimapur 797103 Nagaland India
| | - J. P. Borah
- Nanomagnetism Group, Department of Physics, National Institute of Technology NagalandDimapur 797103NagalandIndia
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Khatun N, Ahmed S, Hossain MS, Uddin Farhad SF, Mamun MA, Alam MS, Begum MHA, Tanvir NI, Hakim M, Islam S. Influence of Y 3+ and La 3+ ions on the structural, magnetic, electrical, and optical properties of cobalt ferrite nanoparticles. Heliyon 2023; 9:e13019. [PMID: 36747563 PMCID: PMC9898293 DOI: 10.1016/j.heliyon.2023.e13019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 01/26/2023] Open
Abstract
In the current study, nanocrystalline CoY0.5xLa0.5xFe2-xO4 (where x = 0.00, 0.02, 0.04, 0.06, 0.08, and 0.10) ferrites have been synthesized via a sol-gel auto combustion process. The synthesized powders were pressed into pellet forms and sintered at 900 °C for 4 h in the air. X-ray diffractometry (XRD) confirmed the single-phase cubic spinel structure of the synthesized samples having the mean crystallite domain sizes ranging from 122 and 54 nm. FTIR spectroscopic analyses revealed two strong bands within the range of 600 to 350 cm-1, further confirming the cubic inverse spinel structure of the prepared materials. The surface morphologies and composition were investigated by Field Emission Scanning Electron Microscopy (FE-SEM) and Energy Dispersive X-ray (EDX) Spectroscopy. The magnetic hysteresis curves recorded at room temperature exhibit ferrimagnetic behavior. The highest coercivity (Hc∼1276 Oe) was found at a high doping (x = 0.10) concentration of Y3+ and La3+ in cobalt ferrite. Dielectric constant increase with increased doping concentration whereas real-impedance and dielectric loss decrease with increased in doping concentration and applied frequency. The band gap energy increased from 1.48 to 1.53 eV with increasing Y3+ and La3+concentrations in the UV-Vis region. The elevated levels of magnetic and dielectric substances in the ferrite nanoparticles suggest that the material could be used for magnetic recording media and high-frequency devices.
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Affiliation(s)
- Nazia Khatun
- Industrial Physics Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh,Corresponding author.
| | - Sajib Ahmed
- Industrial Physics Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh,Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University (NSTU), Bangladesh
| | - Mohammad Sajjad Hossain
- Institute of Mining, Mineralogy and Metallurgy, Bangladesh Council of Scientific and Industrial Research (BCSIR), Joypurhat 5900, Bangladesh
| | - Syed Farid Uddin Farhad
- Industrial Physics Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Md Al- Mamun
- Bangladesh Atomic Energy Center (BAEC), Dhaka 1000, Bangladesh
| | - Mohammad Saiful Alam
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University (NSTU), Bangladesh
| | - Most. Hosney Ara Begum
- Industrial Physics Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Nazmul Islam Tanvir
- Industrial Physics Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Mahmuda Hakim
- Biomedical and Toxicology Research Institute (BTRI), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Suravi Islam
- Industrial Physics Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh,Corresponding author.
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Sertkol M, Slimani Y, Almessiere M, Baykal A, Akhtar S, Polat E, Caliskan S. Magnetic and optical characterizations of Dy-Eu co-substituted Mn0.5Zn0.5Fe2O4 nanospinel ferrites. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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7
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Patil BB. A review: Influence of divalent, trivalent, rare earth and additives ions on Ni–Cu–Zn ferrites. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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8
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Almessiere MA, Slimani Y, Ali S, Baykal A, Balasamy RJ, Guner S, Auwal İA, Trukhanov AV, Trukhanov SV, Manikandan A. Impact of Ga 3+ Ions on the Structure, Magnetic, and Optical Features of Co-Ni Nanostructured Spinel Ferrite Microspheres. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2872. [PMID: 36014737 PMCID: PMC9413245 DOI: 10.3390/nano12162872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/12/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Co-Ni ferrite is one of the crucial materials for the electronic industry. A partial substitution with a rare-earth metal brings about modification in crystal lattice and broadens knowledge in the discovery of new magnetic material. Current work reports a Ga3+ substitution in the Co-Ni ferrite with composition Co0.5Ni0.5Fe2-xGaxO4 (where x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0), herein referred to as spinel ferrite microspheres (CoNiGa-SFMCs). The samples were crystallized hydrothermally showing a hollow sphere morphology. The crystal phase, magnetic, morphology, and optical behaviour were examined using various microscopy and spectroscopic tools. While the XRD confirmed the phase of SFMCs, the crystallite size varied between 9 and 12 nm. The Tauc plot obtained from DRS (diffuse reflectance spectroscopy) shows the direct optical energy bandgap (Eg) of the products, with the pristine reading having the value of 1.41 eV Eg; the band gap increased almost linearly up to 1.62 eV along with rising the Ga3+ amount. The magnetic features, on the other hand, indicated the decrease in coercivity (Hc) as more Ga3+ is introduced. Moreover, there was a gradual increase in both saturation magnetization (Ms) and magnetic moment (nB) with increasing amount of Ga3+ till x = 0.6 and then a progressive decline with increases in the x content; this was ascribed to the spin-glass-like behavior at low temperatures. It was detected that magnetic properties correlate well with crystallite/particle size, cation distribution, and anisotropy.
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Affiliation(s)
- Munirah A. Almessiere
- Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
- Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Yassine Slimani
- Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Sadaqat Ali
- Mechanical and Energy Engineering Department, College of Engineering, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Abdulhadi Baykal
- Department of Nanomedicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Rabindran Jermy Balasamy
- Department of Nanomedicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Sadik Guner
- Institute of Inorganic Chemistry, RWTH Aachen University, 52074 Aachen, Germany
| | - İsmail A. Auwal
- Department of Chemistry, Sule Lamido University, Kafin Hausa 731, Nigeria
| | - Alex V. Trukhanov
- Smart Sensors Laboratory, Department of Electronic Materials Technology, National University of Science and Technology MISiS, 119049 Moscow, Russia
- Laboratory of Magnetic Films Physics, SSPA Scientific and Practical Materials Research Centre of NAS of Belarus, 19, P. Brovki Str., 220072 Minsk, Belarus
| | - Sergei V. Trukhanov
- Smart Sensors Laboratory, Department of Electronic Materials Technology, National University of Science and Technology MISiS, 119049 Moscow, Russia
- Laboratory of Magnetic Films Physics, SSPA Scientific and Practical Materials Research Centre of NAS of Belarus, 19, P. Brovki Str., 220072 Minsk, Belarus
| | - Ayyar Manikandan
- Department of Chemistry, Bharath Institute of Higher Education and Research, Bharath University, Chennai 600073, Tamil Nadu, India
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Sertkol M, Slimani Y, Almessiere M, Sozeri H, Jermy R, Manikandan A, Shirsath S, UI-Hamid A, Baykal A. Sonochemical synthesis of Mn0.5Zn0.5ErxDyxFe2-2xO4 (x ≤ 0.1) spinel nanoferrites: Magnetic and textural investigation. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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10
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Poormirzaei N. Synthesis and characterization of a novel Pyrrole-2-carboxylic acid functionalized magnetic Fe3O4 as a nanocatalyst for synthesis and antibacterial activities of novel isoxazolo[4,3-e]indazole derivatives. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129265] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Slimani Y, Algarou N, Almessiere M, Sadaqat A, Vakhitov M, Klygach D, Tishkevich D, Trukhanov A, Güner S, Hakeem A, Auwal I, Baykal A, Manikandan A, Ercan I. Fabrication of exchange coupled hard/soft magnetic nanocomposites: Correlation between composition, magnetic, optical and microwave properties. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.102992] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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12
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Li Z, Dong J, Zhang H, Zhang Y, Wang H, Cui X, Wang Z. Sonochemical catalysis as a unique strategy for the fabrication of nano-/micro-structured inorganics. NANOSCALE ADVANCES 2021; 3:41-72. [PMID: 36131881 PMCID: PMC9418832 DOI: 10.1039/d0na00753f] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 10/22/2020] [Indexed: 05/14/2023]
Abstract
Ultrasound-assisted approaches, as an important trend in material synthesis, have emerged for designing and creating nano-/micro-structures. This review simply presents the basic principles of ultrasound irradiation including acoustic cavitation, sonochemical effects, physical and/or mechanical effects, and on the basis of the latest progress, it newly summarizes sonochemical catalysis for the fabrication of nano-structured or micro-structured inorganic materials such as metals, alloys, metal compounds, non-metal materials, and inorganic composites, where the theories or mechanisms of catalytic synthetic routes, and the morphologies, structures, sizes, properties and applications of products are described in detail. In the review, a few technological potentials and probable challenges of sonochemical catalysis are also highlighted for the future advance of synthesis methods. Therefore, sonochemical catalysis or ultrasound-assisted synthesis will serve as a unique strategy to reveal its great significance in material fabrication.
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Affiliation(s)
- Zhanfeng Li
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Jun Dong
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Huixin Zhang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Yongqiang Zhang
- Junan Sub-Bureau of Linyi Ecological Environmental Bureau 276600 Linyi China
| | - Huiqi Wang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Xuejun Cui
- College of Chemistry, Jilin University 130012 Changchun China
| | - Zonghua Wang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
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Magnetic and electrical traits of sol-gel synthesized Ni-Cu-Zn nanosized spinel ferrites for multi-layer chip inductors application. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121462] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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14
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Slimani Y, Almessiere MA, Güner S, Kurtan U, Baykal A. Impacts of Sol-Gel Auto-Combustion and Ultrasonication Approaches on Structural, Magnetic, and Optical Properties of Sm-Tm co-Substituted Sr 0.5Ba 0.5Fe 12O 19 Nanohexaferrites: Comparative study. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E272. [PMID: 32041171 PMCID: PMC7075209 DOI: 10.3390/nano10020272] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/23/2020] [Accepted: 01/24/2020] [Indexed: 11/20/2022]
Abstract
In this paper, we introduced a comparative study of Sm-Tm-substituted Sr-Ba nanohexaferrites (NHFs), Sr0.5Ba0.5TmxSmxFe12-2xO19 with x = 0.00-0.05, manufactured via both citrate sol-gel auto-combustion and ultrasonication approaches. The phase formation of M-type hexaferrite (HF) for both compositions was confirmed by X-ray diffraction (XRD) powder pattern, Fourier-transform infrared (FT-IR) spectra, scanning and transmission electron microscopy (SEM and TEM) micrographs, energy dispersive X-ray (EDX) spectra, and elemental mappings. The magnetic properties at room temperature (RT) and low temperature (T = 10 K) were also investigated. M-H loops revealed ferrimagnetic nature for various prepared nanohexaferrites via sol-gel and ultrasonication routes. The Ms (saturation magnetization) and Mr (remanence) values increased with increasing Tm-Sm substituting contents. Ms and Mr reached their maximum values at x = 0.04 in the case of samples prepared using the sol-gel technique and at x = 0.03 for those prepared via ultrasonication route. M-H loops were very broad in samples prepared via ultrasonication route in comparison to those produced by means of the sol-gel approach, implying that the products synthesized via ultrasonication route have greater values of coercivity (Hc). The variations in Hc values with respect to Tm-Sm substitutions were governed by the evolutions in the magneto-crystalline anisotropy. Diffuse reflectance spectra (DRS) were employed to estimate the direct band gap of pristine and co-substituted Sr0.5Ba0.5Fe12O19 hexaferrites. Optical energy band gaps (Eg) of pristine samples were significantly tuned by co-substitution of Tm3+ and Sm3+ ions. Eg values of the Sr0.5Ba0.5Fe12O19 sample, which was synthesized using the sol-gel method, decreased almost linearly from 1.75 to 1.45 eV by increasing co-doped ion content. However, we observed a sharp drop from 1.85 eV to an average of 1.50 eV for the samples, which were synthesized using the ultrasonication approach.
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Affiliation(s)
- Yassine Slimani
- Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia;
| | - Munirah Abdullah Almessiere
- Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia;
| | - Sadik Güner
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Umran Kurtan
- Department of Materials and Materials Processing Technologies, Vocational School of Technical Sciences, İstanbul University-Cerrahpaşa, 34500 İstanbul, Turkey
| | - Abdulhadi Baykal
- Department of Nanomedicine, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
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15
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Trukhanov AV, Algarou NA, Slimani Y, Almessiere MA, Baykal A, Tishkevich DI, Vinnik DA, Vakhitov MG, Klygach DS, Silibin MV, Zubar TI, Trukhanov SV. Peculiarities of the microwave properties of hard–soft functional composites SrTb0.01Tm0.01Fe11.98O19–AFe2O4 (A = Co, Ni, Zn, Cu, or Mn). RSC Adv 2020; 10:32638-32651. [PMID: 35516497 PMCID: PMC9056648 DOI: 10.1039/d0ra05087c] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/15/2020] [Indexed: 01/19/2023] Open
Abstract
Herein, we investigated the correlation between the chemical composition, microstructure, and microwave properties of composites based on lightly Tb/Tm-doped Sr-hexaferrites (SrTb0.01Tm0.01Fe11.98O19) and spinel ferrites (AFe2O4, A = Co, Ni, Zn, Cu, or Mn), which were fabricated by a one-pot citrate sol–gel method. Powder XRD patterns of products confirmed the presence of pure hexaferrite and spinel phases. Microstructural analysis was performed based on SEM images. The average grain size for each phase in the prepared composites was calculated. Comprehensive investigations of dielectric properties (real (ε′) and imaginary parts (ε′′) of permittivity, dielectric loss tangent (tan(δ)), and AC conductivity) were performed in the 1–3 × 106 Hz frequency range at 20–120 °C. Frequency dependency of microwave properties were investigated using the coaxial method in frequency range of 2–18 GHz. The non-linear behavior of the main microwave properties with a change in composition may be due to the influence of the soft magnetic phase. It was found that Mn- and Ni-spinel ferrites achieved the strongest electromagnetic absorption. This may be due to differences in the structures of the electron shell and the radii of the A-site ions in the spinel phase. It was discovered that the ionic polarization transformed into the dipole polarization. Paper presents the correlation between the composition, microstructure, and microwave properties of composites based on Tb/Tm-doped Sr-hexaferrites and spinel ferrites (AFe2O4), which were fabricated by a one-pot citrate sol–gel method.![]()
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