物理学报2012，Vol.61Issue(7)：506-510,5.
脉冲磁场下水热法制备Cr掺杂ZnO稀磁半导体晶体
Synthesis of Cr-doped ZnO diluted magnetic semiconductor by hydrothermal method under pulsed magnetic field
摘要
Abstract
In this study,zinc chloride,chromic chloride,ammonium hydroxide and ammonium chloride are used as the source materials to prepare the crystalline Cr-doped ZnO diluted magnetic semiconductor by the hydrothermal method under a 4-T pulsed magnetic field.The structures and the morphologies of the samples are characterized by X-ray diffraction and scanning electron microscope. The magnetic analysis of the specimens is performed by vibrating sample magnetometer.The effects of pulsed magnetic field on the microstructure and the magnetic properties of the Cr-doped ZnO are discussed.The result indicates that all the samples still have hexagonal wurtzite structures.The pulsed magnetic field is conducive to promote the crystal growth orientation.The sample fabricated under pulsed magnetic field exhibits good room temperature ferromagnetism.The saturation magnetization is 0.068 emu/g.However, the sample synthesized without magnetic field shows paramagnetism at room temperature.The Curie temperature（T_c） of the Cr-doped ZnO is increased by 16 K through the pulsed magnetic field processing.关键词
脉冲磁场/水热法/稀磁半导体/Cr掺杂ZnOKey words
pulsed magnetic field/hydrothermal/Cr-doped ZnO/diluted magnetic semiconductor分类
数理科学引用本文复制引用
朱明原,刘聪,薄伟强,舒佳武,胡业旻,金红明,王世伟,李瑛..脉冲磁场下水热法制备Cr掺杂ZnO稀磁半导体晶体[J].物理学报,2012,61(7):506-510,5.基金项目
上海市科委项目 （）
上海市教委科研创新项目 （）
上海市重点学科建设项目 （）
教育部创新团队发展计划资助项目（批准号：IRT0739）资助的课题~~ （）
