Phase Diagram of BaTiO3

T. Ishidate, S. Abe, H. Takahashi, and N. Môri
Phys. Rev. Lett. 78, 2397 – Published 24 March 1997
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Abstract

The temperature-pressure phase diagram of BaTiO3 has been determined by means of a dielectric measurement. All successive phase transition temperatures decrease with increasing pressure with critical index φ=1, in the classical limit, and φ=2, in the quantum limit. The dielectric behavior close to the quantum region agrees with the quantum theoretical prediction. In BaTiO3 the crossover region from the classical limit to the quantum one is observed in the range of pressure 4 to 8 GPa and temperature 0 to 200 K.

  • Received 1 October 1996

DOI:https://doi.org/10.1103/PhysRevLett.78.2397

©1997 American Physical Society

Authors & Affiliations

T. Ishidate and S. Abe

  • Department of Physics, Faculty of Science, Shizuoka University, Shizuoka, Japan

H. Takahashi and N. Môri

  • The Institute for Solid State Physics, The University of Tokyo, Tokyo, Japan

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Vol. 78, Iss. 12 — 24 March 1997

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