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N codoping induced room temperature ferromagnetic enhancement in (Fe, N)-codoped In2O3 films by experimental and computational insights
Cao, DD; Pan, F; Wu ZH(吴忠华); Wu, ZH; Liu, JW; An, YK
2016
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
卷号689页码:575-580
文章类型期刊论文
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.
关键词In2O3 film N-codoping Local structure Magnetic properties
DOI10.1016/j.jallcom.2016.08.043
关键词[WOS]MAGNETIC SEMICONDUCTORS ; DOPED IN2O3 ; THIN-FILMS ; NANOPARTICLES ; CO ; FE
语种英语
WOS类目Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号WOS:000384427200076
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260333
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Cao, DD,Pan, F,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 Cao, DD,Pan, F,吴忠华,Wu, ZH,Liu, JW,&An, YK.(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 Cao, DD,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.
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