Local structure investigation of (Co,Cu) co-doped ZnO nanocrystals and its correlation with magnetic properties |
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| Institution: | 1. Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India;2. Department of Physics, University of Pune, Pune 411007, India;3. Indus Synchrotrons Utilization Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India;4. UGC-DAE Consortium for Scientific Research, Indore 452001, India;1. Institute of Problems of Mechanical Engineering, V.O., Bolshoj pr. 61, St. Petersburg 199178, Russia;2. Ioffe Institute, Politekhnicheskaya 26, St. Petersburg 194021, Russia;3. Helmholtz_Zentrum Berlin fur Materialen und Energie, Elektronenspeicherring BESSY II D, 12489 Berlin, Germany;1. Department of Applied Physics, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, PR China;2. School of Physics and Engineering, Xingyi Normal University for Nationalities, Xingyi 562400, PR China;1. Key Laboratory of Materials Design and Preparation Technology of Hunan Province, School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, Hunan, China;2. Key Laboratory of Low Dimensional Materials & Application Technology (Ministry of Education), School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan 411105, China;3. Hunan Key Laboratory for Computation and Simulation in Science and Engineering, School of Mathematics and Computational Science, Xiangtan University, Xiangtan 411105, Hunan, China;4. School of Chemistry, Xiangtan University, Xiangtan 411105, Hunan, China;1. Department of Nanochemistry, Faculty of Pharmaceutical Chemistry, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran-Iran (IAUPS), Iran;2. Young Researchers and Elite club, Central Tehran Branch, Islamic Azad University, Tehran, Iran;3. Department of Mechanical Engineering, Semnan Branch, Islamic Azad University, Semnan, Iran;1. Catalysis and Nanomaterials Research Laboratory, Department of Chemistry Loyola College, Chennai 600 034, India;2. School of Materials Science and Engineering, Harbin Institute of Technology at Weiahi, West Wenhua Road, Weiahi 264209, China;3. Nanotechnology Centre, University of Bahrain, PO Box 32038, Kingdom of Bahrain;4. Departments of Physics, College of Science, University of Bahrain, PO Box 32038, Kingdom of Bahrain;5. Materials Division, School of Advanced Sciences, Vellore Institute of Technology (VIT) University, Chennai Campus, Chennai 600 127, India;1. Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia;2. Department of Physics, University of Azad Jammu and Kashmir, 13100 Muzaffarabad, Pakistan;3. Low Dimensional Materials Research Centre (LDMRC), Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia;4. Ionic Materials & Devices (iMADE) Research Laboratory, Institute of Science, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia;5. Department of Physics, National Cheng-Kung University, No. 1, University Rd., Tainan City 701, Taiwan;6. Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia |
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| Abstract: | Pure, Co doped and (Co, Cu) co-doped ZnO nanocrystals have been prepared by wet chemical route at room temperature to investigate the effect of Cu doping in Co doped ZnO nanocrystals . The nanocrystals have initially been characterized by X-ray diffraction, FTIR, Raman, optical absorption and EPR spectroscopy and the results were corroborated with DFT based electronic structure calculations. Magnetic properties of the samples have been investigated by studying their magnetic hysteresis behavior and temperature dependence of susceptibilities. Finally the local structure at the host and dopant sites of the nanocrystals have been investigated by Zn, Co and Cu K edges EXAFS measurements with synchrotron radiation to explain their experimentally observed magnetic properties. |
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| Keywords: | Oxides Chemical synthesis XAFS (EXAFS and XANES) Magnetic properties |
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