Birefringence of SrTiO3 at the ferroelastic phase transition

被引：45

作者：

Geday, MA ^{[1
]}

Glazer, AM ^{[1
]}

机构：

[1] Clarendon Lab, Dept Phys, Oxford OX1 3PU, England

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2004年 / 16卷 / 20期

关键词：

D O I：

10.1088/0953-8984/16/20/001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A birefringence-imaging study of a crystal of SrTiO3 shows a purely second-order phase transition close to 105 K with no measurable indications of critical fluctuations. The near perfectly linear development of the birefringence near the m (3) over bar mF4/mmm phase transition is consistent with normal Landau mean-field behaviour with an order-parameter critical exponent close to 0.5.

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页码：3303 / 3310

页数：8

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