Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications

Oxygen vacancies of YIG influence on the MPE in Au/YIG heterostructures

Authors
Xiao Liang, Fei Huang, Chuangtang Wang, Yupeng Zhu, Yan Zhang, Yue Li, Lei Bi
Corresponding Author
Xiao Liang
Available Online January 2017.
DOI
https://doi.org/10.2991/icmmita-16.2016.74How to use a DOI?
Keywords
Oxygen vacancies; Magnetic proximity effect; Au/YIG heterostructures.
Abstract
The oxygen vacancies of Y3Fe5O12(YIG) influence on the magnetic proximity effect (MPE) in Au/YIG heterostructures has been studied by first principles calculations based on the density functional theory (DFT). The results show that one oxygen vacancies can reduce the two neighbor Fe3+ to Fe2+ and MPE in Au/YIG is strongly depended on the valence states of Fe ion. The induced magnetism in Au atoms is found to increase with the increasing concentration of Fe2+. In oxygen vacancy free case (Fe3+ state), weak electron states hybridization of Fe(3d) and Au(5d) is found form the projected electron density of states distribution, while after introduce the oxygen vacancy (Fe2+ state), the states of Fe(3d) are generally move to higher energy states and hybridize with the Au(5d) states. Moreover, more states of Fe2+ at tetrahedral sites are hybridize with the Au(5d) states compare with that of Fe2+ at octahedral sites, therefore a net magnetic moment induced Au atoms is found and the direction of spin polarization of Au atoms is paralleled to Fe ion at tetrahedral sites.
Open Access
This is an open access article distributed under the CC BY-NC license.

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Cite this article

TY  - CONF
AU  - Xiao Liang
AU  - Fei Huang
AU  - Chuangtang Wang
AU  - Yupeng Zhu
AU  - Yan Zhang
AU  - Yue Li
AU  - Lei Bi
PY  - 2017/01
DA  - 2017/01
TI  - Oxygen vacancies of YIG influence on the MPE in Au/YIG heterostructures
BT  - Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 410
EP  - 414
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-16.2016.74
DO  - https://doi.org/10.2991/icmmita-16.2016.74
ID  - Liang2017/01
ER  -