TRICRITICAL BEHAVIOR IN UNIAXIALLY STRESSED RBCAF3

被引：90

作者：

BUZARE, JY ^{[1
]}

FAYET, JC ^{[1
]}

BERLINGER, W ^{[1
]}

MULLER, KA ^{[1
]}

机构：

[1] LAB SPECTROSCOPIE SOLIDE,F-72017 LE MANS,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1979年 / 42卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.42.465

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the Oh1 to D4h18 structural phase transition in RbCaF3 under near-[100] stress, by monitoring the electron-paramagnetic resonance lines of Gd3+ (S=72) on a Ca2+ site. We find that the first-order transition at zero stress becomes second order at t=1.90.3 kg/mm2 and Tt=195.30.1 K. At this tricritical point, and up to =4.80.3 kg/mm2, the exponent of the temperature dependence of the rotational order parameter is =0.180.02. © 1979 The American Physical Society.

引用

页码：465 / 468

页数：4

共 20 条

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