Phase equilibria in the GeBiTe ternary system at 570–770 K temperature range
Phase equilibria in the GeBiTe ternary system at 570–770 K temperature range
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GeBiTe 三元体系在 570–770 K 温度范围内的相平衡
DOI：
10.1016/s0925-8388(96)02394-8
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
E. S. Avilov
中科院分区：
文献类型：
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作者：
L. E. Shelimova;O. G. Karpinsky;M. Kretova;E. S. Avilov
利用金相和X射线衍射数据，建立了Ge_xBi_xTe三元系在570和770 K的两个等温截面。在770 K下，除了已知的Ge 3Bi 2 Te 6（A）、GeBi 2 Te 4（B）和GeBi 4 Te 7（C）化合物之外，还发现了两种非化学计量的Ge 2 − xBi 2 + xTe 5（D）和Ge 4 − xBi 2 + xTe 7（F）相。Ge 2 − xBi 2 + xTe 5和Ge 1 − xBi 2 + xTe 7相分别具有9层和39层结构。考虑到Bi_xTe二元系中（GeTe）_nBi_2 Te_3（n = 1 ~ 9）和（Bi_2 Te_3）_mGeTe（m = 1 ~ 4）同系的高分子和有序中间相的形成，计算了570 K等温截面.
Two isothermal sections of the GeBiTe ternary system at 570 and 770 K have been constructed using metallography and X-ray diffraction data. Two non-stoichiometric Ge2−xBi2+xTe5(D) and Ge4−xBi2+xTe7(F) phases have been found at 770 K in addition to the known Ge3Bi2Te6(A), GeBi2Te4(B) and GeBi4Te7(C) compounds. The Ge2−xBi2+xTe5and Ge1−xBi2+xTe7phases are characterized by nine- and 39-layer structures respectively. The isothermal section at 570 K has been constructed taking into account the formation of high members of the (GeTe)nBi2Te3(n = 1 to 9) and (Bi2Te3)mGeTe (m = 1 to 4) homologous series and ordered intermediate phases in the BiTe binary system.