Dielectric behavior and phase transition in perovskite oxide Pb (Fe1/2Nb1/2)1-xTixO3single crystal

Yanmin Jia, Haosu Luo, Siu Wing Or, Yu Wang, Helen Lai Wa Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)

Abstract

Perovskite oxide Pb (Fe1/2Nb1/2)0.52Ti0.48O3crystals, which were grown using a modified Bridgman method, show a high low-frequency dielectric constant response at room temperature. The Curie phase transition occurs at 523 K. The characteristic frequency of the dielectric dispersion versus the inverse of temperature obeys an Arrhenius relation, which shows a thermally activated behavior. The thermal activation energy for relaxation was found to be ∼0.14 eV. The high dielectric permittivity was attributed to oxygen vacancies and conduction via hopping carriers.
Original languageEnglish
Article number124109
JournalJournal of Applied Physics
Volume105
Issue number12
DOIs
Publication statusPublished - 16 Jul 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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