Structural characterization of epitaxial multiferroic BiFeO3 films grown on SrTiO3 (100) substrates by crystallizing amorphous Bi-Fe-Ox

Hiroshi Naganuma, Takamichi Miyazaki, Akihiko Ukachi, Mikihiko Oogane, Shigemi Mizukami, Yasuo Ando

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Amorphous Bi-Fe-Ox films prepared on SrTiO3 (100) substrates using a conventional r. f. magnetron sputtering system were crystallized by post-annealing at 873K in an atmosphere. Microstructural observations by X-ray diffraction and cross-sectional transmission electron microscopy revealed that the crystallized Bi-Fe-Ox films were well-epitaxially BiFeO3 fabricated without interfacial layer although as-prepared film was amorphous structure with excess Bi. The crystallized BiFeO3 films have fairly epitaxial compatibly ([001](001)BiFeO 3//[001](001)SrTiO3). These results indicate that (1) BiFeO3 has good epitaxial compatibility with SrTiO3 and (2) crystallizing amorphous Bi-Fe-Ox is one possible method that can be used to fabricate high-quality multiferroic barriers for tunnel junctions.

Original languageEnglish
Pages (from-to)648-651
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume118
Issue number1380
DOIs
Publication statusPublished - 2010 Aug

Keywords

  • BiFeO
  • Epitaxial film
  • Multiferroics
  • SrTiO
  • Transmission electron microscopy (TEM)

ASJC Scopus subject areas

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

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