Electronic Structure and Magnetic Properties of Cobalt-Doped Nonstoichiometric Rutile Thin Films

被引：0
作者：
N. A. Skorikov
M. A. Korotin
机构：
[1] M.N. Mikheev Institute of Metal Physics,
来源：
Journal of Superconductivity and Novel Magnetism | 2019年 / 32卷
关键词：
Electronic structure; Two-dimensional rutile; Coherent potential approximation; Diluted magnetic semiconductor;
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中图分类号：
学科分类号：
摘要：
The coherent potential method has been applied for the investigation of Co substitutional doping influence on the spectral and magnetic properties of TiO2 rutile (100) surface. Both stoichiometric and nonstoichiometric oxygen compositions have been considered. For the stoichiometric case, the energy spectrum corresponds to half-metallic ferromagnet. The Co ions are in 2 + formal oxidation state with a spin magnetic moment of 0.8 μB. The presence of oxygen vacancies makes the surface insulating and increases the Co spin magnetic moment value.
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页码：1371 / 1375
页数：4
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