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Electrical resistance of αFe2O3under ultrahigh static pressure

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
36
Issue
2
Identifiers
DOI: 10.1016/0038-1098(80)90680-8

Abstract

Abstract The electrical resistance of high purity αFe 2O 3 is measured in a triple-stage high pressure apparatus using polycrystalline sintered diamond as the last stage pistons. The resistance is nearly constant at about 10 7Ω and begins to drop at 0.4–0.5 Mbar. It tends to level out at about 10 4Ω, then start dropping again down to a few ohms. The first decrease may correspond to the transition of αFe 2O 3 found in shock-wave experiments. The second decrease may indicate the presence of a new transition to the conductive state.

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