Effects of Eu doping and O vacancy on the magnetic and optical properties of ZnO
作者： Xu Zhen-Chao , Zhao Chun-Wang , Qu Ling-Feng , Hou Qing-Yu , Jia Xiao-Fang
DOI: 10.1016/J.PHYSB.2017.11.021
关键词: Antiferromagnetism 、 Vacancy defect 、 Ferromagnetism 、 Curie temperature 、 Magnetism 、 Magnetic semiconductor 、 Doping 、 Absorption spectroscopy 、 Materials science 、 Condensed matter physics
摘要: Abstract We calculated the electronic structure and optical properties of Eu mono-doped ZnO systems with or without O vacancy. also determined relative energy ferromagnetic antiferromagnetic orders Eu-double-doped systems. The double-doped possess high Curie temperature achieve room ferromagnetism. magnetism in system vacancy is caused by -Eu3+-O2--Eu3+- bound magnetopolaron (BMP) model. more stable than that vacancy, such attributed to -Eu3+-VO++-Eu3+- BMP absorption spectrum for red shifted, this finding confirms Eu-mono-doped a candidate photocatalyst various applications. Therefore, can be practically used as an unambiguous diluted magnetic semiconductor.
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