Neutron diffraction study of electrostrictive coefficients of prototype cubic phase of relaxor ferroelectric PbMg1/3Nb2/3O3

J. Zhao, A. E. Glazounov, Q. M. Zhang, Brian Toby

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    Abstract

    The electrostrictive coefficients of prototype cubic phase of PbMg1/3Nb2/3O3 are studied using a high-resolution neutron powder diffraction experiment. The key idea of the approach is to "eliminate" from the material the inhomogeneity related to the presence of the double-phase mixture "polar regions/nonpolar matrix," and to study two structurally homogeneous states: prototype cubic at temperatures above 600 K and rhombohedral ferroelectric at temperatures below 220 K. The obtained value of volumetric electrostrictive coefficient, Qh=(8.3±1.0)×10-2 ×(m4/C2), is consistent with those of other perovskite ferroelectrics with a prototype cubic phase.

    Original languageEnglish (US)
    Pages (from-to)1048-1050
    Number of pages3
    JournalApplied Physics Letters
    Volume72
    Issue number9
    DOIs
    StatePublished - Dec 1 1998

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    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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