首页    期刊浏览 2024年11月28日 星期四
登录注册

文章基本信息

  • 标题:Probing the magnetic profile of diluted magnetic semiconductors using polarized neutron reflectivity
  • 本地全文:下载
  • 作者:X. Luo ; L. T. Tseng ; W. T. Lee
  • 期刊名称:Scientific Reports
  • 电子版ISSN:2045-2322
  • 出版年度:2017
  • 卷号:7
  • 期号:1
  • DOI:10.1038/s41598-017-06793-w
  • 语种:English
  • 出版社:Springer Nature
  • 摘要:Room temperature ferromagnetism has been observed in the Cu doped ZnO films deposited under an oxygen partial pressure of 10(-3) and 10(-5) torr on Pt (200 nm)/Ti (45 nm)/Si (001) substrates using pulsed laser deposition. Due to the deposition at relatively high temperature (873 K), Cu and Ti atoms diffuse to the surface and interface, which significantly affects the magnetic properties. Depth sensitive polarized neutron reflectometry method provides the details of the composition and magnetization profiles and shows that an accumulation of Cu on the surface leads to an increase in the magnetization near the surface. Our results reveal that the presence of the copper at Zn sites induces ferromagnetism at room temperature, confirming intrinsic ferromagnetism.
国家哲学社会科学文献中心版权所有