Rapid microwave-assisted synthesis and magnetic properties of high-entropy spinel (Cr0.2Mn0.2Fe0.2Co0.2-xNi0.2Znx)3O4 nanoparticles |
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| Affiliation: | 1. Department of Materials Science and Engineering, Chungnam National University, Daejeon, 34134, Republic of Korea;2. Nanotechnology Department, School of Advanced Technologies, Iran University of Science & Technology (IUST), Narmak, Tehran, 16846-13114, Iran;3. Department of Mechanical Engineering, Yonsei University, Seoul, 03722, Republic of Korea;4. School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran;1. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, 510006, China;2. School of Mechanical Engineering, Hunan University of Technology, Zhuzhou, 412007, China;3. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China;4. Aluminum Valley Industrial Technology Institute, 888 Aluminum Valley Building, Heban 2nd Road, Zouping, 256200, China;1. Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, PR China;2. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, PR China;3. Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China;1. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110819, PR China;2. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China;3. Foshan Graduate School of Innovation, Northeastern University, Foshan 528311, PR China;1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China;2. Hubei Longzhong Laboratory, Xiangyang, 441000, Hubei, China;1. College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China;2. College of Science, Shenyang University of Chemical Technology, Shenyang 110142, China;3. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China |
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| Abstract: | High-entropy oxide (HEO) has recently become popular because of its unique multifunctional performance. In this study, we developed a novel microwave-assisted method for the production of HEO nanoparticles with the composition (Cr0.2Fe0.2Mn0.2Co0.2-xNi0.2Znx)3O4 (x = 0, 0.05, 0.1, and 0.2). The results revealed that all metallic elements were uniformly distributed throughout the single-phase cubic spinel structure of the HEO nanoparticles. The particle size distributions of four fabricated samples ranged from 10 to 50 nm. Because of its numerous advantages such as the ultrafast and low-temperature fabrication of nanoscale and high-purity products at a relatively low cost, the suggested methodology is an excellent synthesis method. The original HEO spinel (x = 0) achieved saturated magnetization (Ms) and coercivity (Hc) values of 24.3 emu/g and 160 Oe, respectively, at room temperature. Zinc substitution in the HEO composition indicated that Ms and Hc decreased with increasing zinc concentration owing to its non-magnetic nature. |
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| Keywords: | High-entropy oxide Spinel Magnetic properties Microwave-assisted Nanoparticles |
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