Transport of lanthanum ion and hole in LaCrO3 determined by electrical conductivity measurements

Takaya Akashi, Toshio Maruyama, Takashi Goto

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Effective diffusion coefficient in LaCrO3 was determined by transient electrical conductivity based on Fick's second law. The diffusion coefficient of La3+ ion was calculated from the effective diffusion coefficient. The diffusion coefficient of La3+ ion and the activation energy was in agreement with the reported value. The diffusion coefficient of hole in LaCrO3 was also calculated from electrical conductivity and hole concentration. The hole concentration is estimated from the relation between the electrical conductivity and the amount of alkaline-earth in (La,A)CrO3 (A=Sr, Ca). The diffusion coefficient of hole in LaCrO3 was much higher than those of other components in LaCrO3.

Original languageEnglish
Pages (from-to)177-183
Number of pages7
JournalSolid State Ionics
Volume164
Issue number3-4
DOIs
Publication statusPublished - 2003 Nov 1

Keywords

  • Diffusion coefficient
  • Electrical conductivity
  • Fick's second law
  • Hole
  • Lanthanum chromite
  • Lanthanum ion
  • Nernst-Einstein's equation

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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