Oxygen vacancies of YIG influence on the MPE in Au/YIG heterostructures
- https://doi.org/10.2991/icmmita-16.2016.74How to use a DOI?
- Oxygen vacancies; Magnetic proximity effect; Au/YIG heterostructures.
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.
- © 2017, the Authors. Published by Atlantis Press.
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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 -