A gigantic photoinduced dielectric constant of quantum paraelectric perovskite oxides observed under a weak DC electric field

被引：106

作者：

Takesada, M ^{[1
]}

Yagi, T

Itoh, M

Koshihara, S

机构：

[1] Hokkaido Univ, Res Inst Elect Sci, Sapporo, Hokkaido 0600812, Japan

[2] Kanagawa Acad Sci & Technol, Kawasaki, Kanagawa 2130012, Japan

[3] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

[4] Tokyo Inst Technol, Dept Mat Sci, Tokyo 1528551, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 01期

关键词：

photoinduced effect; perovskite oxide; quantum paraelectric state; SrTiO3; KTaO3; (SrTiO3)-O-18; isotope effect;

D O I：

10.1143/JPSJ.72.37

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A gigantic enhancement of dielectric constant by UV light irradiation is reported for the first time in the quantum paraelectric family of perovskite oxides, such as SrTiO3 and KTaO3, under a weak DC field. The enhancement has not been observed in ferroelectric (SrTiO3)-O-18 induced by substitution of O-18 for O-16. The present result suggests a new class of light-switching phenomena controllable externally.

引用

页码：37 / 40

页数：4

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