Phase equilibria in the ZnGeAs2–MnAs system

被引：0
|
作者：
A. N. Aronov
S. F. Marenkin
I. V. Fedorchenko
P. N. Vasil’ev
N. M. Boeva
机构：
[1] Russian Academy of Sciences,Kurnakov Institute of General and Inorganic Chemistry
[2] Russian Academy of Sciences,Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry (IGEM)
[3] National University of Science and Technology MISiS,undefined
[4] Russian Academy of Sciences,undefined
来源：
Russian Journal of Inorganic Chemistry | 2016年 / 61卷
关键词：
Topaz; Thermoanalytical Curve; Lamellar Eutectic; Differential Thermal Analy; Arsenic Distribution;
D O I：
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学科分类号：
摘要：
The ZnGeAs2–MnAs system is a eutectic-type system as determined by X-ray powder diffraction, DTA, and microstructure observation, with the eutectic coordinates: 61 mol % ZnGeAs2 mol %, 39 mol % MnAs, and Tm = 816°C. The eutectic is a lamellar eutectic as shown by microstructure examination. A characteristic feature of the system is a small mutual solubility of the components. Precision analysis of diffraction patterns enabled us to refine unit cell parameters for cubic and tetragonal ZnGeAs2 phases. MnAs in alloys is shown to consist of a hexagonal phase and a orthorhombic phase. ZnGeAs2 and MnAs alloys are ferromagnets (TC ~ 320 K). Their magnetization increases in response to increasing MnAs content.
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页码：103 / 108
页数：5
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