Synthesis and characterization of the new high pressure phases ACu^sub 3^ V^sun 4^O^sub 12^(A=Gd, Tb, Er)

New ACu3V4O12 (A=Gd, Tb, Er) phases have been prepared at high pressure and high-temperature conditions (P ...8-9 GPa, T ...1000...C) in a toroid-type high pressure cell. These compounds crystallize in the cubic symmetry with a perovskite-like structure. At ambient pressure, they are paramagnetic an...

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Bibliographic Details
Published in:High pressure research 2013-06, Vol.33 (2), p.418
Main Authors: Melnikova, N V, Kadyrova, N I, Ustinova, I S, Volkova, Ya Yu, Tyutyunnik, A P, Zaynulin, Yu G, Babushkin, A N, Korolev, A V
Format: Article
Language:English
Subjects:
Chemical compounds
Conductivity
Crystal structure
High temperature
Pressure
Online Access:Get full text
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Summary:New ACu3V4O12 (A=Gd, Tb, Er) phases have been prepared at high pressure and high-temperature conditions (P ...8-9 GPa, T ...1000...C) in a toroid-type high pressure cell. These compounds crystallize in the cubic symmetry with a perovskite-like structure. At ambient pressure, they are paramagnetic and have activation-type conductivity. The effect of high pressure (10-50 GPa) on the electrical properties of the materials was analyzed in the temperature range from 78 to 300 K. Pressure ranges of the transition from activation type to metallic conductivity have been determined. The crystal structure of ACu3V4O12 (A=Gd, Tb, Er) was found to be stable up to 50 GPa. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0895-7959
1477-2299