Observation of a high-pressure cinnabar phase in CdTe.
Observation of a high-pressure cinnabar phase in CdTe.
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DOI：
10.1103/physrevb.48.1314
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发表时间：
1993-07
期刊：
影响因子：
--
通讯作者：
Nelmes;McMahon;Wright;Allan
中科院分区：
文献类型：
--
作者：
Nelmes;McMahon;Wright;Allan
用角度色散粉末衍射法和像板面探测器和同步辐射重新研究了碲化镉的高压行为。我们发现，闪锌矿结构到∼结构的结构相变实际上包括两个间隔很近的相变--闪锌矿到朱砂，以及朱砂到氯化钠。这是硫族汞化合物外的朱砂结构的例子。Cd和Te原子是位置有序的，结构的配位比HGS朱砂中的配位更接近四倍
Angle-dispersive powder-diffraction techniques with an image-plate area detector and synchrotron radiation have been used to reexamine the high-pressure behavior of cadmium telluride. We find that the well-known structural phase transition at ∼3.5 GPa from the zinc-blende to NaCl structure actually involves two closely spaced transitions-zinc blende to cinnabar, and cinnabar to NaCl. This is the example of the cinnabar structure outside the mercury chalcogenides. The Cd and Te atoms are site ordered, and the coordination of the structure is closer to fourfold than is found in HgS cinnabar