Growth and interface phase stability of barium hexaferrite films on SiC(0001)

V. K. Lazarov, P. J. Hasnip, Z. Cai, K. Yoshida, K. S. Ziemer

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We have studied interface phase stability of the BaFe12O 19 (BaM) thin films grown by molecular beam epitaxy on SiC(0001). The films were epitaxially grown with the following crystallographic relation: BaM(0001)∥SiC(0001) and BaM(11-20)∥SiC(11-20). High resolution TEM reveals the existence of two interfacial bands with different structure than BaM. The first band close to SiC is SiOx while the second has spinel structure and chemically corresponds to Fe3O4. These findings suggest that at initial growth stages Fe3O4 is more favorable than BaM. Density functional theory modeling of the phase stability of BaM compared to Fe3O4 shows that BaM is only stable at high oxygen partial pressures.

Original languageEnglish
Article number07E520
JournalJournal of Applied Physics
Volume109
Issue number7
DOIs
Publication statusPublished - 2011 Apr 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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