Nonlinear susceptibility and phase transition in SrTi18O3 -: art. no. 092107

被引：22

作者：

Kleemann, W ^{[1
]}

Dec, J

Wang, RP

Itoh, M

机构：

[1] Univ Duisburg, Lab Angew Phys, D-47048 Duisburg, Germany

[2] Silesian Univ, Inst Phys, PL-40007 Katowice, Poland

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

[4] Natl Inst Adv Ind Sci & Technol, Smart Struct Res Ctr, Tsukuba, Ibaraki 3058568, Japan

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.67.092107

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The nonlinear dielectric response of (SrTiO3)-O-18 is measured as a function of temperature and dc bias field strength. In the low-field region the nonlinearity coefficient chi(3)/chi(1)(4) is found to strongly decrease when approaching T(c)approximate to25 K. This corroborates the existence of a fluctuation-controlled quantum ferroelectric phase transition despite its smearing due to quenched random fields and excludes a random-bond random-field cluster glass mechanism. Classic field scaling applies to temperatures T>1.1T(c).

引用

页数：4

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