拉曼散射
材料科学
衍射
拉曼光谱
凝聚态物理
相变
相(物质)
各向异性
压缩性
反射率
Grüneisen参数
结晶学
三角晶系
晶体结构
光学
化学
物理
热力学
热膨胀
复合材料
有机化学
作者
Ulrich Schwarz,A. R. Goñi,K. Syassen,A. Cantarero,A. Chévy
标识
DOI:10.1080/08957959108260687
摘要
Abstract We have investigated the high pressure behavior of InSe by x-ray powder diffraction and optical measurements. The rhombohedral γ-polytype of InSe (space group R3m) exhibits a strongly anisotropic compressibility characteristic of the layer-type structure. Mode Gruneisen parameters of intralayer modes have been determined by Raman scattering. At 10.3(5) GPa InSe undergoes a phase transition to the rocksalt structure, which remains stable up to at least 30 GPa. Optical reflectivity measurements show the cubic high pressure phase to have metallic character.
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