N codoping induced room temperature ferromagnetic enhancement in (Fe, N)-codoped In2O3 films by experimental and computational insights

doi:10.1016/j.jallcom.2016.08.043

	N codoping induced room temperature ferromagnetic enhancement in (Fe, N)-codoped In2O3 films by experimental and computational insights
	Pan, F; Cao, DD; Wu, ZH; An, YK; Liu, JW; Wu ZH(吴忠华)
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2016
卷号	689 页码:575-580
关键词	In2O3 film N-codoping Local structure Magnetic properties
DOI	10.1016/j.jallcom.2016.08.043
英文摘要	The (Fe, N)-codoped In2O3 films with cubic bixbyite structure have been prepared by magnetron sputtering methods. A combination of the XRD, XPS with X-ray absorption spectroscopy techniques reveals that the codoped Fe and N impurities were substitutionally dissolved at In and O sites of the In2O3 lattice, respectively, and form Fe-In + 2V(O) complex in the first coordination shell of Fe. The Mott variable-range hopping (VRH) conduction mechanism was observed to dominate at the low temperature region, which is accompanied by an obvious room-temperature ferromagnetic behavior for both the films, while the N codoping remarkably enhances the saturated magnetization (M-s) of the (Fe, N)-codoped In2O3 film. Based the first principles calculations, it was found that N codoping in the (Fe, N)-codoped In2O3 film can change the magnetic coupling between two Fe ions from antiferromagnetic to ferromagnetic due to the strong N 2p-Fe 3d hybridization interaction. It can be concluded that the indirect interaction between bound magnetic polarons (BMP) based oxygen vacancies as well as the Fe-N-Fe ferromagnetic superexchange interaction may be responsible for the intrinsic ferromagnetic ordering in the (Fe, N)-codoped In2O3 film. These results may provide a new sight for understanding the magnetic mechanism of In2O3 based DMS systems. (C) 2016 Elsevier B.V. All rights reserved.
语种	英语
WOS记录号	WOS:000384427200076
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260333]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Pan, F,Cao, DD,Wu, ZH,et al. N codoping induced room temperature ferromagnetic enhancement in (Fe, N)-codoped In2O3 films by experimental and computational insights[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2016,689:575-580.
APA	Pan, F,Cao, DD,Wu, ZH,An, YK,Liu, JW,&吴忠华.(2016).N codoping induced room temperature ferromagnetic enhancement in (Fe, N)-codoped In2O3 films by experimental and computational insights.JOURNAL OF ALLOYS AND COMPOUNDS,689,575-580.
MLA	Pan, F,et al."N codoping induced room temperature ferromagnetic enhancement in (Fe, N)-codoped In2O3 films by experimental and computational insights".JOURNAL OF ALLOYS AND COMPOUNDS 689(2016):575-580.