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Studies on the high-pressure reaction of Er2O3and VO2

Authors
Journal
Materials Research Bulletin
0025-5408
Publisher
Elsevier
Publication Date
Volume
14
Issue
10
Identifiers
DOI: 10.1016/0025-5408(79)90011-4

Abstract

Abstract The reaction of erbium sesquioxide (Er 2O 3) and vanadium dioxide (VO 2) at 50 kbar and 30 kbar pressures and 1400°C were studied. In the course of the reaction, tetravalent vanadium ions were reduced to the trivalent state and erbium vanadites (ErVO 3) were obtained. The crystal structures of the products were examined by an x-ray diffraction analysis. At 50 kbar, a vaterite-type (μ-CaCO 3) compound isostructural with ErBO 3, which belonged to a hexagonal system, and at 30 kbar, a calcite-type vanadite belonging to a rhombohedral (pseudo-hexagonal) system were obtained. In the case of the reaction of erbium sesquioxide and vanadium trioxide (V 2O 3) at high pressure, a perovskite-type erbium vanadite was obtained. The magnetic properties of the compounds were studied.

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