Electrical conductivity and oxygen stoichiometry of SrFeO3-delta

Authors
Vashuk, VV Kokhanovskii, LV Yushkevich, II
Citation
Vv. Vashuk et al., Electrical conductivity and oxygen stoichiometry of SrFeO3-delta, INORG MATER, 36(1), 2000, pp. 79-83
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
INORGANIC MATERIALS
ISSN journal
00201685 → ACNP
Volume
36
Issue
1
Year of publication
2000
Pages
79 - 83
Database
ISI
SICI code
0020-1685(200001)36:1<79:ECAOSO>2.0.ZU;2-I
Abstract
Solid-electrolyte coulometry, thermogravimetry, and conductivity (sigma) da ta obtained at temperatures from 20 to 1000 degrees C and oxygen partial pr essures from 1 to 10(5) Pa were used to construct the equilibrium p-T-x and p-T-sigma phase diagrams of strontium ferrate, SrFeO3-delta. Strontium fer rate was shown to be p-type throughout the temperature and p(O2) ranges stu died. Cooling polycrystalline SrFeO3-delta in flowing oxygen or air was fou nd to be accompanied by sharp changes in resistivity.