Studies of the physical properties of Co, Cu codoped ZnO powders |
| |
Authors: | Yanyan Wei Denglu Hou Shuang Qiao Congmian Zhen Guide Tang |
| |
Institution: | Department of Physics, Hebei Normal University, Shijiazhuang 050016, China |
| |
Abstract: | Zn0.95−xCo0.05CuxO powders have been synthesized by the sol-gel method and the structural, magnetic and electrical properties of the powders have been investigated. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) indicate that the Co ions do not change the ZnO wurtzite structure. Magnetic measurements indicate that Co doping can induce room temperature (RT) ferromagnetism and the addition of Cu to the powders further increases the magnetic moment per Co ion. The effects of the introduction of Cu as an acceptor dopant in the host matrix are further studied using resistance measurements. It is demonstrated experimentally that acceptor doping plays an important role in realizing dominant ferromagnetic ordering in Co doped ZnO powders. |
| |
Keywords: | Diluted magnetic semiconductors Codoping Ferromagnetism Acceptor doping |
本文献已被 ScienceDirect 等数据库收录! |