V. V. Shchennikov, S. V. Ovsyannikov, A. Yu. Manakov, A. Yu. Likhacheva, A. I. Ancharov, I. F. Berger, M. A. Sheromov, “Structure of the intermediate high-pressure phases of ternary lead tellurides”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2006, Volume 83, Issue 6,Pages <nobr>271

This article is cited in 20 papers

CONDENSED MATTER

Structure of the intermediate high-pressure phases of ternary lead tellurides

V. V. Shchennikov^a, S. V. Ovsyannikov^ab, A. Yu. Manakov^c, A. Yu. Likhacheva^d, A. I. Ancharov^e, I. F. Berger^a, M. A. Sheromov^f

^a Institute of Metal Physics, Ural Division of the Russian Academy of Sciences
^b The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
^c Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences
^d Institute of Mineralogy and Petrology, Siberian Branch RAS
^e Institute of Chemistry of Solid State Siberian Branch RAS
^f Institute of Nuclear Physics, Siberian Branch of Russian Academy of Sciences

Abstract: In chambers with diamond anvils, the structure of high-pressure phases of ternary lead tellurides Pb_1−xSn_xTe (x = 0.29) and Pb_1−xMn_xTe (x = 0.05) and nonstoichiometric crystals Pb_0.55Te_0.45, Pb_0.45Te_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.

PACS: 07.35.+k, 61.10.Nz, 61.50.Ks, 62.50.+p, 81.40.Vw

Received: 10.02.2006