Electrical and Magnetic Properties of the System SrFeO3-BiFeO3

Perovskite phases containing iron in both the tetravalent and trivalent states were prepared by equilibration at high oxygen pressures. Small bismuth additions to SrFeO3 resulted in high conductivity (101 to 103 (ohm‐cm)–1 at 26°C) and antiferromagnetic order below 130°K. Distortion to tetragonal sy...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1966-12, Vol.49 (12), p.644-647
Main Authors: MacCHESNEY, J. B., JETZT, J. J., POTTER, J. F., WILLIAMS, H. J., SHERWOOD, R. C.
Format: Article
Language:English
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Summary:Perovskite phases containing iron in both the tetravalent and trivalent states were prepared by equilibration at high oxygen pressures. Small bismuth additions to SrFeO3 resulted in high conductivity (101 to 103 (ohm‐cm)–1 at 26°C) and antiferromagnetic order below 130°K. Distortion to tetragonal symmetry occurs approximately at the composition Bi0.3Sr0.7FeO2.87, but higher bismuth concentrations (up to 80 mole %) give rise to a second cubic phase region which shows decreased conductivity (∼10–5 (ohm‐cm)–1) and weak ferromagnetism with ordering temperatures higher than 26°C. Rhombohedral specimens Bi0.9Sr0.1FeO2.96 and BiFeO3.01 are anti‐ferromagnetic and have comparatively low conductivity.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1966.tb13191.x