Structural modulations in the intermediate phase of antiferroelectric PbHfO3

Hideshi Fujishita, Kenichi Kato, Eiji Nishibori, Masaki Takata, Makoto Sakata, Susumu Katano

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    8 Citations (Scopus)

    Abstract

    We determine the crystal structure of the intermediate antiferroelectric (A2) phase of PbHfO3 by a Rietveld method using X-ray and neutron diffraction. The structure can be described by modulations associated with the lattice vibrational mode Σ3(TO) with q (0.15,0.15,0)and the Rxy 25 mode, although the latter modulation is relatively distorted. The size of the orthorhombic unit cell is p2 × 10p2 × 2 times as large as that of the high-temperature cubic cell. The space group is Pbam-D9 2h (No. 55), and is the same as that of the room-temperature antiferroelectric (A1) phase of PbHfO3.

    Original languageEnglish
    Article number124603
    Journaljournal of the physical society of japan
    Volume87
    Issue number12
    DOIs
    Publication statusPublished - 2018 Jan 1

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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