Morphological,structural, surface,thermal, chemical,and magnetic properties of Al-doped nanostructured copper ferrites |
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| Affiliation: | 1. Department of Chemical and Materials Engineering, King Abdulaziz University, P.O. Box, 80204, Jeddah, 21589, Saudi Arabia;2. Physics Department, College of Sciences, Al Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia;1. Physics Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia;2. Physics Department, Faculty of Science, Zagazig University, Zagazig, Egypt;1. College of Safety Science and Engineering, Nanjing Tech University, Nanjing, 211816, China;2. College of Emergency Management, Nanjing Tech University, Nanjing, 211816, China;3. Hefei Institute for Public Safety Research, Tsinghua University, Hefei, 230601, China;4. State Grid Anhui Electric Power Research Institute, Hefei, 230601, China;5. School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan, 430070, China;1. School of Medicine, Anhui University of Science and Technology, Huainan, PR China;2. Center for Orthopaedic Science and Translational Medicine, Department of Orthopaedics, Shanghai Tenth People''s Hospital, School of Medicine, Tongji University, 301 Yanchang Road, Shanghai, 200072, PR China;1. National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, 2006 Xiyuan Road, Chengdu, 611731, PR China;2. College of Physics Engineering, Henan University of Science and Technology, Luoyang, 471000, PR China;3. Faculty of Humanities and Arts, Macau University of Science and Technology, Macau SAR, 999078, PR China;4. School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Road, Chengdu, 611731, PR China;5. The Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313001, PR China;6. Faculty of Materials Science and Engineering, Phenikaa University, Yen Nghia Ward, Ha Dong District, Hanoi, 12116, Viet Nam;7. Faculty of Electrical and Electronic Engineering, Phenikaa University, Yen Nghia Ward, Ha Dong District, Hanoi, 12116, Viet Nam;8. Institute of Energy Storage and New Materials Technology, Dongfang Electric Corporation Science and Technology Research Institute Co., Ltd, 18 Xixin Avenue High-tech Zone West Park, Chengdu, 611731, Sichuan, PR China;9. Materials Science and Engineering Department, University of Ioannina, Ioannina, 1186, Greece;10. Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology, 96 Jinzhai Road, Hefei, 230000, PR China |
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| Abstract: | Aluminum-doped copper ferrite nanoparticles synthesized via thermal decomposition were analyzed for Al3+ substitution effects. Nanocrystalline doped copper ferrite with a crystallite size <9 nm was characterized using several advanced techniques, including X-ray diffractometry (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS). The degree of thermal decomposition used for doping copper ferrite at the nanoparticle level correlates well with the quantitative, dimensional, and structural characterizations. The Scherrer equation and Williamson–Hall method were employed to determine the general lattice strain and constants. Structural properties, such as the oxygen positional parameters, radii of the octahedral and tetrahedral sites, hopping lengths, bond lengths and angles, site bonds, and edge lengths, were determined using XRD patterns. The improved A–B super-exchange interaction was demonstrated by the discrepancy in the theoretically anticipated bond angles. The analysis of magnetic hysteresis (M ? H) using a vibrating sample magnetometer (VSM) and XPS confirmed the improvement in the super-exchange interaction. XPS results suggest that Fe and Cu in the crystal lattice are in the form of FeIII and CuII, respectively. The investigation of the degree of inversion, state, and composition using XPS aids to understand the properties of the nanostructured copper ferrites. The saturation and remnant magnetization were determined from hysteresis loops at 1.8 T obtained using the VSM at room temperature. The noncollinear spin and efficient sublattice interactions are responsible for the decrease in Ms and Mr. |
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| Keywords: | Al-doped copper ferrite Magnetization Spectroscopy Scherrer and W-H extrapolation Octahedral and tetrahedral sites |
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