Structural, optical, and magnetic properties of Cu-implanted GaN films

Autor:	S. D. Yao, Zhijian Yang, G. Y. Zhang, Chuan-She Wang, Kun Wang, Zhitao Chen, Xiaolong Yang, X. D. Pei, Yuhao Zhang, Z. B. Ding
Rok vydání:	2009
Předmět:	Materials science Condensed matter physics business.industry Wide-bandgap semiconductor General Physics and Astronomy Magnetic semiconductor Magnetic susceptibility Condensed Matter::Materials Science Magnetization Ion implantation Semiconductor Ferromagnetism Atom business
Zdroj:	Journal of Applied Physics. 105:053910
ISSN:	1089-7550 0021-8979
Popis:	The structural, optical, and magnetic properties of Cu-implanted GaN films have been investigated. No secondary phase was found within the resolution limit of the instrument but the lattice defects such as vacancies were present in the film. Room temperature ferromagnetism was observed with saturation magnetization of 0.3μB/Cu atom. The field-cooled magnetization curves can be well fitted by a Curie-Weiss model and a standard three-dimensional spin-wave model in the low and high temperature ranges, respectively. Our findings indicate that the vacancylike defects should be considered in understanding the observed magnetic properties of the Cu-implanted GaN films.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3a2d47a09a38fcf850dc2cfedda1d29a https://doi.org/10.1063/1.3079519 Zobrazit plný text záznamu