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Phase Transitions in Multiferroic BiFeO3

Published online by Cambridge University Press:  26 February 2011

Alexander G. Gavriliuk ,
Viktor Struzhkin ,
Igor S. Lyubutin ,
Ivan A. Trojan ,
Michael Y. Hu  and
Paul Chow
Alexander G. Gavriliuk
Affiliation:
[email protected], Institute for High Pressure Physics, RAS, Analitical Department, Kaluzhskoe shosse, Troitsk, Moscow region, 142190, Russian Federation, +7(495)334-0804, +7(495)334-0012
Viktor Struzhkin
Affiliation:
[email protected], Carnegie Institution of Washington, Geophysical Laboratory, 5251 Broad Branch Road NW, Washington, DC, 20015, United States
Igor S. Lyubutin
Affiliation:
[email protected], Institute of Crystallography, RAS, Leninskii prospekt 59, Moscow, 119333, Russian Federation
Ivan A. Trojan
Affiliation:
[email protected], Max Planck Institute fur Chemie, Postfach 3060, Mainz, 55020, Germany
Michael Y. Hu
Affiliation:
[email protected], Advanced Photon Source, ANL, HPCAT and Carnegie Institution of Washington, Argonne, IL, 60439, United States
Paul Chow
Affiliation:
[email protected], Advanced Photon Source, ANL, HPCAT and Carnegie Institution of Washington, Argonne, IL, 60439, United States
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Abstract

The multiferroic BiFeO3 crystals were studied under high pressures up to 70 GPa created in diamond anvil cells. Electronic, magnetic and structural transformations were found in the region 40-55 GPa. Electronic transition with high-to-low spin crossover of Fe3+ ion, suppression of magnetism and metallization were carefully investigated and documented. All transitions are completely reversible. The proposed theoretical consideration explains some details of the high-pressure magnetic, optical and electronic properties.

Keywords

metal-insulator transitionmagnetic propertieselectronic structure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 987: Symposium PP – Materials Research at High Pressure , 2006 , 0987-PP05-02
Copyright
Copyright © Materials Research Society 2007

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References

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