Impedance and ionic conduction of single crystalline BaTi2O5

Hirokazu Katsui, Keiji Shiga, Takashi Goto

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Electrical properties of single-crystalline BaTi2O5, prepared by a floating zone method, were examined by AC impedance spectroscopy at frequencies of 10−2 to 106 Hz at temperatures of 425–970 K. Complex impedance in a direction perpendicular to (001) was exhibited by a single resistor (R)–capacitor (C) parallel circuit. In the direction perpendicular to (010), four R–C parallel circuits were involved: two R–C circuits were associated with a strong temperature-dependent ferroelectric response and a slightly temperature-dependent paraelectric response, while the other two R–C circuits corresponded to the interface phenomena associated with ionic conduction. The electrical conductivity in the direction perpendicular to (010) was one-to-three orders of magnitude higher than that in the direction perpendicular to (001).

Original languageEnglish
Pages (from-to)75-80
Number of pages6
JournalMaterials Chemistry and Physics
Volume186
DOIs
Publication statusPublished - 2017 Jan 15

Keywords

  • Ferroelectricity
  • Impedance
  • Ionic conductivity
  • Single crystalline BaTiO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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