氘化甜菜碱砷酸盐晶体的超声研究

Soviet physics. Solid state Pub Date : 1991-01-01 DOI:10.1080/00150199208017050

J. Albers, E. Balashova, A. Klöpperpieper, V. Lemanov, H. E. Müser, A. B. Sherman, J. B. Sykes

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引用次数: 3

摘要

研究了脱盐甜菜碱砷酸盐晶体相变时的声学特性异常。确定了序参量-声子系统相互作用能的形式。确定了序参量的松弛时间。结果表明，这些晶体具有较长的弛豫时间，弛豫时间向甜菜碱-氘化甜菜碱-砷酸盐相图分岔点方向增加，表明可能存在挫折效应

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Ultrasonic studies of deuterated betaine arsenate crystals

Anomalies of acoustic properties at phase transitions in deuderated betaine arsenate crystals were studied. The form of the order parameter-phonon sybsystem interaction energy was ascertained. The order parameter relaxation times were determined. It was found that these crystals have long relaxation times, which increase toward the betaine arsenate-deuterated betaine arsenate phase diagram bifurcation point, indicating possible frustration effects

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