Ferroelastic phase transition in BiVO4 I. Birefringence measurements using the rotating-analyser method
Ferroelastic phase transition in BiVO4 I. Birefringence measurements using the rotating-analyser method
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BiVO4 中的铁弹性相变 I. 使用旋转分析仪方法进行双折射测量
DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
A. Glazer
中科院分区：
文献类型：
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作者：
I. Wood;A. Glazer
本文对双折射的测量方法作了简要的评述。本文详细介绍了用调制法（双折射分析器）精确测量高温下光学双折射的装置，并对该装置的进一步应用提出了建议。该技术应用于BiVO 4铁弹单斜-四方相变的特殊情况。双折射在很宽的温度范围内表现出平均场行为，平均场转变温度为519.9（3）K。
A brief review of methods of measuring birefringence is given. Apparatus for the accurate measurement of optical birefringence at high temperatures using a modulation (rotating-analyser) method is described in detail, together with suggestions for further applications of the equipment. The technique is applied to the particular case of the ferroelastic monoclinic–tetragonal phase transition in BiVO4. The birefringence was found to show mean-field behaviour over a wide temperature range with a mean-field transition temperature of 519.9 (3) K.