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Author: search.filters.author.Muanghlua, RangsonSubject: search.filters.subject.Phase transitions

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    Effect of A-site and B-site ion replaced with small ions on the intermediate phase in PbZrO3 ceramic
    (2014-02-14)
    Sukkha, Usa
    ;
    Vittayakorn, Wanwilai
    ;
    Muanghlua, Rangson
    ;
    Niemcharoen, Surasak
    ;
    Vittayakorn, Naratip
    The solid solution of (1 - x)PbZrO<inf>3</inf>-xNaNbO<inf>3</inf> ceramics, where x = 0.0-0.08, was synthesized by solid state reaction. The basic characterizations were performed using X-ray diffraction (XRD), dielectric spectroscopy, hysteresis measurement and differential scanning calorimetry (DSC) techniques. The results indicated that the crystal structure of the solid solution, (1 - x)PZ-xNN, where x = 0.00-0.08, is of orthorhombic symmetry. It was found that the effect of NN being replaced with small ions at the A-site and B-site can induce an AFE-like phase in PZ. The FE intermediate phase of PZ cannot be induced, although Zr<sup>4+</sup> ions were substituted by small Nb<sup>5+</sup> ions. This is due to the decreasing average rate of radii in the A-site (0.1 Å mol<sup>-1</sup>) being higher than that in the B-site (0.08 Å mol<sup>-1</sup>). © 2013 Elsevier B.V. All rights reserved.