物理学报2012，Vol.61Issue(13)：444-448,5.
退火氛围对掺杂ZnO薄膜磁性的影响
Influence of annealing ambience on the magnetic properties of doped ZnO films
摘要
Abstract
The non-magnetic element A1 and magnetic element Co doped ZnO films are prepared by dc magnetron sputtering The films were annealed first in vacuum and then in air. The crystal structures are analyzed by x-ray diffraction （XRD） and magnetic properties are measured by Physical Properties Measurement System （PPMS）. The results show that annealing ambience has a great influence on structure and magnetic property of sample A1 doped ZnO films annealed in vacuum show no room temperature ferromagnetism, but the ones annealed in air show room temperature ferromagnetism. The room temperature ferromagnetism may be associated with enhanced charge transfer between A1 and ZnO films annealed in air. And for Co doped ZnO films annealed in air annealed, the ferromagnetism is weakened. The change of magnetism may be related to the competition between enhanced magnetism resulting from charge transfer between A1 and ZnO and reduced magnetism resulting from interstitial Co atoms oxygenated.关键词
稀磁半导体/铁磁性/退火氛围Key words
diluted magnetic semiconductors/ferromagnetism/annealing ambience分类
矿业与冶金引用本文复制引用
李志文,岂云开,顾建军,孙会元..退火氛围对掺杂ZnO薄膜磁性的影响[J].物理学报,2012,61(13):444-448,5.基金项目
河北省自然科学基金 （）
河北民族师范学院科研基金 （）
河北省高等学校科学研究项目（批准号：Z2011101）资助的课题 （）
