X-ray diffraction study on pressure-induced phase transformations and the equation of state of ZnGa2Te4

被引：38

作者：

Errandonea, D. ^{[1
]}

Kumar, R. S. ^{[2
]}

Gomis, O. ^{[3
]}

Manjon, F. J. ^{[4
]}

Ursaki, V. V. ^{[5
]}

Tiginyanu, I. M. ^{[5
]}

机构：

[1] Univ Valencia, Dept Fis Aplicada ICMUV, MALTA Consolider Team, E-46100 Valencia, Spain

[2] Univ Nevada, High Pressure Sci & Engn Ctr, Dept Phys & Astron, Las Vegas, NV 89154 USA

[3] Univ Politecn Valencia, MALTA Consolider Team, Ctr Tecnol Fis Acust Mat & Astrofis, Valencia 46022, Spain

[4] Univ Politecn Valencia, MALTA Consolider Team, Inst Diseno Fabricac & Prod Automatizada, Valencia 46022, Spain

[5] Moldavian Acad Sci, Inst Appl Phys, Kishinev 2028, Moldova

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 23期

关键词：

SINGLE-CRYSTAL; HGGA2SE4; CELL;

D O I：

10.1063/1.4851735

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on high-pressure x-ray diffraction measurements up to 19.8 GPa in zinc digallium telluride (ZnGa2Te4) at room temperature. An irreversible structural phase transition takes place at pressures above 12.1 GPa and upon decompression a third polymorph of ZnGa2Te4 was recovered as a metastable phase at pressures below 2.9 GPa. Rietveld refinements were carried out for the three detected polymorphs, being their possible crystal structures reported. The axial compressibilities for the low-pressure phase of ZnGa2Te4 have been determined as well as the equation of state of the low-and high-pressure phases. The reported results are compared with those available in the literature for related compounds. Pressure-induced coordination changes and transition mechanisms are also discussed. (C) 2013 AIP Publishing LLC.

引用

页数：7

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