Ultrawideband dielectric spectroscopy of BaZrxTi 1-xO3 ceramics and its microscopic mechanism of polarization

Takashi Teranishi, Takuya Hoshina, Hiroaki Takeda, Takaaki Tsurumi

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28 Citations (Scopus)

Abstract

Ultrawideband dielectric spectroscopy analysis of barium zirconate titanate (BaZrxTi1-xO3BZT) ceramics at different temperatures disclosed the contribution of both the dipole and the ionic polarizations to permittivity at around dielectric maximum temperature (T m). In BaZr0.25Ti0.75O3 ceramics, the permittivity around Tm is dominated by the temperature dependence of the permittivity determined by the dipole polarization (εdipole). In relaxor ferroelectrics, the diffuse dielectric response around Tm could be derived from the temperature dependence of εdipole. The variation of εdipole with temperature could be also explained by the growth process of polar nanoregions (PNRs) and the damping process of the thermal fluctuation of dipoles in PNRs.

Original languageEnglish
Article number114102
JournalJournal of Applied Physics
Volume105
Issue number11
DOIs
Publication statusPublished - Jul 6 2009
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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