Oxygen Vacancy-Induced Room Temperature Ferromagnetism in Rutile TiO2

被引：0
|
作者：
H. Liu
G. P. Li
Q. L. Lin
D. J. E
X. D. Gao
X. B. Wei
X. D. Pan
S. X. Zhang
J. J. Ding
W. Lan
机构：
[1] Lanzhou University,School of Nuclear Science and Technology
[2] Lanzhou University,School of Physical Science and Technology
来源：
Journal of Superconductivity and Novel Magnetism | 2019年 / 32卷
关键词：
Room temperature ferromagnetism; Oxygen vacancy; irradiation; Rutile TiO;
D O I：
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中图分类号：
学科分类号：
摘要：
As oxygen vacancies play an important role in ferromagnetism of rutile TiO2, a method of γ-ray irradiates rutile TiO2 single crystals was subtly proposed to study the effect of oxygen vacancies on magnetic properties. Remarkably, room temperature ferromagnetism was observed in γ-ray irradiated rutile TiO2 single crystals, and the saturation magnetization is the strongest when dose is 4 × 104 Gy which assigned to ESR results. Since the displacement threshold energy of Ti atom is much bigger than that of O atom, the defects produced by γ-irradiation are mainly oxygen vacancies. After irradiation, XPS, PL spectra indicate the presence of oxygen vacancies(VO), Ti3+, and VO-Ti3+ composite defects.
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页码：3557 / 3562
页数：5
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