Effect of the Gamma-Ray Irradiation on the Electric and Optical Properties of SrTiO3 Single Crystals

被引：3
作者：
Lee, Y. S. [1 ]
Lim, Junhwi [1 ]
Kim, E. Y. [2 ,3 ]
Bu, Sang Don [2 ,3 ]
机构：
[1] Soongsil Univ, Dept Phys, Seoul 06978, South Korea
[2] Chonbuk Natl Univ, Dept Phys, Jeonju 54896, South Korea
[3] Chonbuk Natl Univ, Res Inst Phys & Chem, Jeonju 54896, South Korea
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2018年 / 73卷 / 10期
基金：
新加坡国家研究基金会;
关键词：
SrTiO3 single crystal; Gamma-ray irradiation; Photoluminescence; Oxygen vacancy; DIELECTRIC-PROPERTIES; ROOM-TEMPERATURE; RADIATION; STATES;
D O I：
10.3938/jkps.73.1566
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigated the visible emission property of SrTiO3 (STO) single crystals irradiated with gammy-ray (gamma-ray) at various total doses up to 900 kGy. The electric and optical absorption properties of the irradiated STO samples were hardly changed with the gamma-ray irradiation, compared with those of un-irradiated STO. In contrast, the visible emission near 550 nm increased with the gamma-ray dose increasing. While the development of the visible emission was indicative of the increase of oxygen vacancies inside STO by the gamma-ray irradiation, the newly generated oxygen vacancies were not significantly harmful to the electric and optical properties of STO. We concluded that the STO single crystal should have a good tolerance against the damage by the gamma-ray irradiation.
引用
收藏
页码：1566 / 1570
页数：5
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