Phase transitions and glasslike behavior in Sr1xBaxTiO3

V. V. Lemanov, E. P. Smirnova, P. P. Syrnikov, and E. A. Tarakanov
Phys. Rev. B 54, 3151 – Published 1 August 1996
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Abstract

A dielectric and ultrasonic study of phase transitions in Sr1xBaxTiO3 with x ranging from 0.0 to 1.0, is reported. Both ceramic samples and single crystals were studied. The full phase diagram is derived from dielectric measurements for ferroelectric phase transitions and from ultrasonic measurements for structural phase transition. The cubic-tetragonal ferroelectric phase transition which is of the first order in pure BaTiO3 (x=1.0) transforms to the second order phase transition at x close to 0.2. The transition temperature Tc is a linear function of x at x values from 0.2 to 1.0. For x<0.2 the transition temperature is proportional to (x-xc)1/2, where xc=0.035. For x<xc a glasslike behavior is observed. The structural phase transition temperature Ta goes down as compared to pure SrTiO3 when x increases and levels off near x=0.05. © 1996 The American Physical Society.

  • Received 23 January 1996

DOI:https://doi.org/10.1103/PhysRevB.54.3151

©1996 American Physical Society

Authors & Affiliations

V. V. Lemanov, E. P. Smirnova, P. P. Syrnikov, and E. A. Tarakanov

  • A. F. Ioffe Physico-Technical Institute, 194021 St. Petersburg, Russia

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Vol. 54, Iss. 5 — 1 August 1996

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