Effect of Ce and Cu co-doping on the structural,morphological, and optical properties of ZnO nanocrystals and first principle investigation of their stability and magnetic properties |
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| Institution: | 1. Catalysis and Nanomaterials Research Laboratory, Department of Chemistry Loyola College, Chennai 600 034, India;2. Departments of Physics, College of Science, University of Bahrain, PO Box 32038 Kingdom of Bahrain;3. Materials Division, School of Advanced Sciences, Vellore Institute of Technology (VIT) University, Chennai Campus, Chennai 600 127, India;4. School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, 2 West Wenhua Road, Weiahi 264209, China;1. Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA;2. School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India;1. Department of Nanomaterial Engineering, Tarbiat Modares University, Tehran, Iran;2. Department of Electrical Engineering, Tarbiat Modares University, Tehran, Iran;1. Hebei Key Lab of Optic-Electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding 071002, China;2. Department of Chemistry, Renmin University of China, Beijing 100872, China |
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| Abstract: | Ce, Cu co-doped ZnO (Zn1−2xCexCuxO: x=0.00, 0.01, 0.02, 0.03, 0.04 and 0.05) nanocrystals were synthesized by a microwave combustion method. These nanocrystals were investigated by using X-ray diffraction (XRD), UV–visible diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), and vibrating sample magnetometer (VSM). The stability and magnetic properties of Ce and Cu co-doped ZnO were probed by first principle calculations. XRD results revealed that all the compositions are single crystalline. hexagonal wurtzite structure. The optical band gap of pure ZnO was found to be 3.22 eV, and it decreased from 3.15 to 3.10 eV with an increase in the concentration of Cu and Ce content. The morphologies of Ce and Cu co-doped ZnO samples confirmed the formation of nanocrystals with an average grain size ranging from 70 to 150 nm. The magnetization measurement results affirmed the antiferro and ferromagnetic state for Ce and Cu co-doped ZnO samples and this is in agreement with the first principles theoretical calculations. |
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| Keywords: | Semiconductors X-ray diffraction Electronic structure Magnetic properties Optical properties |
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