Quantum ferroelectricity in SrTiO3 induced by oxygen isotope exchange

被引：85

作者：

Itoh, M ^{[1
]}

Wang, RP ^{[1
]}

机构：

[1] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 02期

关键词：

D O I：

10.1063/1.125708

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Oxygen isotope exchange results in a transition of SrTiO3 from quantum paraelectric to quantum ferroelectric. In the vicinity of the composition for the quantum limit, partially isotope-exchanged SrTiO3 shows a high dielectric constant similar to 172 000, whereas unexchanged or fully exchanged SrTiO3 shows lower values. The composition dependence of partially oxygen-exchanged SrTiO3 can be explained by the quantum mechanical "vector model" proposed by Schneider [Phys. Rev. B 13, 1123 (1976)]. (C) 2000 American Institute of Physics. [S0003-6951(00)00902-5].

引用

页码：221 / 223

页数：3

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