期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
Co掺杂ZnO稀磁半导体的微观结构与磁学性质
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1. 邢台学院物理系, 河北邢台 054001;
2. 武汉军械士官学校枪炮系, 湖北武汉 430075;
3. 河北师范大学物理科学与信息工程学院, 河北石家庄 050016 -
DOI：
Origin of Ferromagnetism in Co-doped ZnO Diluted Magnetic Semiconductors
摘要/Abstract
用溶胶-凝胶方法制备了具有单一纤锌矿结构的Co掺杂ZnO稀磁半导体粉末样品.通过对样品的结构、元素价态、电学和磁学性质的分析,研究了样品室温铁磁性来源.研究结果表明,2次烧结的样品比1次烧结样品的磁化强度明显增强;观测到的铁磁性与ZnO本征缺陷(Zn空位)有关,铁磁性起源于局域化受主(Zn空位)之间的交换相互作用.
A sol-gel method to prepare Codoped ZnO diluted magnetic semiconductors compound powders with single wurtize phase and roomtemperature ferromagnetism is studied.On the basis of large amounts of processing exploration,a primary discussion and analysis are made for the observed roomtemperature (RT) ferro magnetic state in the samples as well as its origin in combination with the structure analysis,the bonded state andthe magnetic behavior of the samples.The study reveals that the powders which are 2nd sintered have larger magnetization than the powders which are sintered only once.The observed ferromagnetism in ZnO which is con2nected with the effect of Zn vacancies is mainly originated from the exchange interaction between localized acceptors (Zn vacancies),and its a intrinsic property of Codoped ZnO compound powders.