Probable realization of rotor systems in SrTiO3and PbZr1-xTixO3

Hai Yao Deng, Haitao Huang, Chi Hang Lam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Rotor descriptions of some perovskite compounds and alloys are possibly shown. Temperature behavior of a quantity (T1) in SrTiO3are discussed. T1is argued to serve as fingerprints in identifying the nature of a local mode. It is found with a dip around 105 K, which defies usual wisdom but proves explicable by both the eight-corner and the rotor model. A mapping may exist between these models. We then model PbZr1-xTixO3as a lattice of rotors with randomly distributed cubic anisotropy. The x-driven transition is argued to be of percolation type. Consequences are discussed and shown agreeing with observations.
Original languageEnglish
Pages (from-to)83-86
Number of pages4
JournalPhysica B: Condensed Matter
Volume421
DOIs
Publication statusPublished - 15 Jul 2013

Keywords

  • Dielectric constant
  • Incipient ferroelectrics
  • Quantum rotor model

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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