Electronic structures of LaCoO3-based oxides studied by soft x-ray absorption spectroscopy under controlled temperatures and oxygen partial pressures

R. Oike, K. Amezawa, Y. Tamenori, K. Yashiro, T. Nakamura, T. Kawada

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In situ soft X-ray absorption spectroscopic measurements were performed to evaluate electronic structures of LaCoO3. X-ray absorption spectra at Co LII- and LIII-edges were measured under p(O2) = 10-4 bar at room temperature to 873 K. Depending on temperature, the shape and the peak energy of the absorption spectra were varied, indicating thermally induced spin state transition of Co3+ ion. The results demonstrated that our in situ soft X-ray absorption technique is an useful tool to investigate the electronic structures of components for solid oxide fuel cells under operating conditions.

Original languageEnglish
Pages (from-to)2051-2056
Number of pages6
JournalECS Transactions
Volume57
Issue number1
DOIs
Publication statusPublished - 2013

ASJC Scopus subject areas

  • Engineering(all)

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