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Synthesis and Magnetic Characterization of Bismuth Doped ZnO Nanowires. The basics of ZnO and effect of different doping such as Bi-doping on magnetic properties of ZnO NWs
В наличии
Местонахождение: Алматы | Состояние экземпляра: новый |
Бумажная
версия
версия
Автор: Syed Jamal Ahmed Kazmi and Dr. Syed Raza Ali Raza
ISBN: 9786202794305
Год издания: 2020
Формат книги: 60×90/16 (145×215 мм)
Количество страниц: 100
Издательство: LAP LAMBERT Academic Publishing
Цена: 31889 тг
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Аннотация: Room-temperature ferromagnetism in the large and direct bandgap diluted magnetic semiconductor zinc oxide (ZnO) is attributed to the intrinsic defects and p-orbital–p-orbital (p–p) coupling interaction. However, due to oxidation, the ferromagnetism induced by defects is unstable. In the present work, the solution process synthesis route was utilized to grow pristine and bismuth-doped, highly crystalline ZnO nanowire (ZnO NW)-based samples. The magnetization (M-H) curve of all samples shown ferromagnetic behavior at room temperature. The saturation magnetization for Bi-doped ones is ±0.25 emu/g and for undoped it is ±2.0 emu/g so, almost a 10 times larger magnetization. Laser Induced Breakdown Spectroscopy (LIBS) spectra confirmed the presence of dopant elements in the ZnO. X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) shown pronounced 002 peak along c-axis, having hexagonal top face, respectively. The XRD peak broadening was used to estimates stress and it came out to be 2.51x10-2 for pristine ZnO & 5.80x10-2 for Bi-doped ZnO NWs. UV-Vis shown the change in the bandgap of ZnO NWs after doping.
Ключевые слова: Zinc Oxide, Nanowires, Bismuth Doped, Hydrothermal, Non-magnetic dopant, Diluted Magnetic Semiconductor, anionic doping