ACOUSTICAL PROPERTIES OF DISORDERED FERROELECTRICS
ACOUSTICAL PROPERTIES OF DISORDERED FERROELECTRICS
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DOI：
10.1080/00150199008012783
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发表时间：
1990-01-01
期刊：
影响因子：
0.8
通讯作者：
YUSHIN, NK
中科院分区：
文献类型：
--
作者：
DOROGOVTSEV, SN;YUSHIN, NK
对许多无序铁电材料的声学特性进行了简短的回顾。首先讨论超声弹性波的速度及其在相变范围内的衰减等特性。我们表明相当广泛的化合物（弛豫剂）可以被识别为相关（簇）极性玻璃。此类材料的实验数据可以自然地解释，同时表明强烈的临界波动和极宽的弛豫时间范围。
A short review of acoustic properties of a number of disordered ferroelectric materials is made. In the first place such characteristics as velocity of ultrasound elastic waves and their attenuation in a phase transition range are discussed. We show that rather wide class of compounds (relaxators) can be identified as correlated (cluster) polar glasses. Experimental data for such materials are interpreted naturally while suggesting strong critical fluctuations and an extremely wide spectrum of relaxation times.