Enhanced ferromagnetism in grain boundary of Co-doped ZnO films: A magnetic force microscopy study

M. N. Lin, H. S. Hsu, J. Y. Lai, M. C. Guo, C. Y. Lin, G. Y. Li, F. Y. Chen, J. J. Huang, S. F. Chen, C. P. Liu, J. C.A. Huang

研究成果: Article同行評審

24 引文 斯高帕斯(Scopus)

摘要

Microscopic grain structures and magnetic properties of Co-doped ZnO-patterned films were studied by combinatorial atomic force microscopy and magnetic force microscopy (MFM) imaging. Whereas Co-doped ZnO was not uniformly magnetized, Co ions were homogeneously doped in the films and substitute from the Zn sites. Most Co:ZnO grains were weakly ferromagnetic (FM) and surrounded by strong FM foamlike grain boundaries networks. No MFM contrast was observed in pure ZnO films grown under similar conditions. The findings clearly demonstrate that defective grain boundaries and magnetic doping have key roles FM properties of diluted magnetic oxides.

原文English
文章編號212509
期刊Applied Physics Letters
98
發行號21
DOIs
出版狀態Published - 2011 五月 23

All Science Journal Classification (ASJC) codes

  • 物理與天文學(雜項)

指紋

深入研究「Enhanced ferromagnetism in grain boundary of Co-doped ZnO films: A magnetic force microscopy study」主題。共同形成了獨特的指紋。

引用此