The influence of B-site cation order on the phase transition behaviour of antiferroelectric lead indium niobate
The influence of B-site cation order on the phase transition behaviour of antiferroelectric lead indium niobate
复制标题
B位阳离子序对反铁电铌酸铅铟相变行为的影响
DOI：
10.1088/0022-3719/19/26/011
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
P. Groves
中科院分区：
文献类型：
--
作者：
P. Groves
该论文使用“单晶”研究了晶格参数和双折射随温度的变化。研究了这些量随退火（排序）而发生的变化。根据晶格参数的变化并通过测量孪晶成分的反射强度，可以随着温度和退火（排序）的变化而跟踪结构畸变。从这些结果导出的晶格参数和结构数据用于描述双折射的温度依赖性。研究了几种退火温度下转变温度随退火时间的变化。使用 X 射线连续记录技术，证明了在所谓的居里范围内高温相和低温相的共存。使用半径为 57.3 mm 的相机拍摄的振荡照片进行精确测量，薄膜安装在 Van Arkel 安装中，结果表明晶胞尺寸随着退火（排序）而增加。
The paper deals with the variation of lattice parameters and birefringence with temperature, using 'single crystals'. The change in behaviour of these quantities with annealing (ordering) is investigated. From the variation in lattice parameters and by measuring the intensities of reflections from twin components the structural distortions are followed as temperature and annealing (ordering) are varied. The lattice parameters and structural data derived from these results are used to describe the temperature dependence of the birefringence. The change in transition temperature with annealing time for several annealing temperatures is investigated. Using the X-ray continuous-recording technique the coexistence of the high- and low-temperature phases over the so-called Curie range is demonstrated. Accurate measurements using oscillation photographs taken on a camera of radius 57.3 mm, with the film in the Van Arkel mounting, show an increase in the unit-cell dimensions with annealing (ordering).