Polymorphic transformations and thermal expansion of some modifications in Ag1.5Cu0.5Se and Ag0.4Cu1.6Se

被引：36

作者：

Aliyev, Y., I ^{[1
,2
]}

Asadov, Y. G. ^{[1
]}

Dashdemirov, A. O. ^{[2
]}

Aliyeva, R. D. ^{[1
]}

Naghiyev, T. G. ^{[1
]}

Jabarov, S. H. ^{[1
,2
]}

机构：

[1] Azerbaijan Natl Acad Sci, Inst Phys, AZ-1143 Baku, Azerbaijan

[2] Azerbaijan State Pedag Univ, Dept Phys & Technol, AZ-1000 Baku, Azerbaijan

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2019年 / 33卷 / 23期

关键词：

Crystal structure; XRD; phase transition; semiconductors; CATION; AG;

D O I：

10.1142/S0217979219502710

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Ag1.5Cu0.5Se and Ag0.4Cu1.6Se compounds have been synthesized and grown as single crystals. High-temperature X-ray diffraction method was used to study polymorphic transformations. It is shown that the Ag1.5Cu0.5Se crystals of high-temperature FCC modification are decomposed into Ag2Se and AgCuSe when the temperature decreases below T = 488 K and Ag0.4Cu1.6Se is decomposed into Cu2Se and AgCuSe when the temperature decreases below T = 540 K. Transformations in both compounds are reversible. Crystalline parameters are obtained and the temperature dependence of the lattice parameters for each phase is built.

引用

页数：9

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