LOW-TEMPERATURE STRUCTURAL PHASE-TRANSITION IN BETA-MOTE2
LOW-TEMPERATURE STRUCTURAL PHASE-TRANSITION IN BETA-MOTE2
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DOI：
10.1080/13642817808245670
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发表时间：
1978-01-01
期刊：
影响因子：
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通讯作者：
HUGHES, HP
中科院分区：
文献类型：
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作者：
CLARKE, R;MARSEGLIA, E;HUGHES, HP
对层状二盐化合物β-MoTe_2晶体的高精度X射线测量表明，晶体在约250K时发生了结构转变。从单斜晶室温形变伴随着单斜角β从93°55‘到90°的不连续变化，具有很大的热滞和高低温相共存。低温结构是垂直于c轴的各层剪切变形的结果。
High-precision X-ray measurements on crystals of the layered dichalcogenide β-MoTe2have revealed a structural transition at approximately 250 K. The transition from the monoclinic room-temperature form is accompanied by a discontinuous change of the monoclinic angle β from 93°55′ to 90°, with substantial thermal hysteresis and coexistence of high- and low-temperature phases. The low-temperature structure is the result of a shear deformation of the layers perpendicular to the c axis.