期刊
JETP LETTERS
卷 83, 期 6, 页码 228-232出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0021364006060026
关键词
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In chambers with diamond anvils, the structure of high-pressure phases of ternary lead tellurides Pb1-xSnx Te (x = 0.29) and Pb1-xMnxTe (x = 0.05) and nonstoichiometric crystals Pb0.55Te0.45, Pb(0.4)5Te(0.55) is analyzed by the synchrotron radiation diffraction method at pressures of P up to 14 GPa. The orthorhombic structure of the intermediate high-pressure phase ( space group Pnma) is determined for all the samples above 6 GPa. Models of the phase transition in PbTe from the initial rock salt structure to the orthorhombic phase, which constitutes a distorted variant of NaCl, as well as the properties of this phase, are discussed.
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