Observation of electronic structure in conduction band of CaTiO3

Kazushige Ueda, Hiroshi Yanagi, Ryuichi Noshiro, Hiroshi Mizoguchi, Takahisa Omata, Naoyuki Ueda, Hideo Hosono, Hiroshi Kawazoe

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Electronic structure in the conduction band of CaTiO3 was examined by the bremsstrahlung isochromat spectroscopy (BIS), X-ray absorption spectroscopy (XAS) and electron energy loss spectroscopy (EELS). Two broad bands were observed at 2 and 7 eV above the Fermi energy in the BIS spectrum. The features of the XAS spectra for Ca L2,3, Ti L2,3, and O K edges were almost the same as those of the EELS spectra, and the XAS spectrum for each element was in reasonable agreement with its partial density of states estimated by an energy band calculation. A trial spectrum was synthesized by the sum of the XAS spectra, and it was found that the feature of the synthesized spectrum is similar to that of the BIS spectrum. From the comparison between XAS and BIS spectra, the two broad bands at 2 and 7 eV in the BIS spectrum were assigned to Ti 3d bands and Ca 4s bands, respectively.

Original languageEnglish
Pages (from-to)964-967
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume106
Issue number10
DOIs
Publication statusPublished - 1998 Oct
Externally publishedYes

Keywords

  • BIS spectra
  • CaTiO
  • Conduction band
  • EELS spectra
  • Electronic structure
  • Photoemission spectra

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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