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Synthesis and characterization of an n=6 Aurivillius phase incorporating magnetically active manganese, Bi7 (Mn,Ti)6 O21

  • M. A. Zurbuchen
  • , R. S. Freitas
  • , M. J. Wilson
  • , P. Schiffer
  • , M. Roeckerath
  • , J. Schubert
  • , M. D. Biegalski
  • , G. H. Mehta
  • , D. J. Comstock
  • , J. H. Lee
  • , Y. Jia
  • , D. G. Schlom

Research output: Contribution to journalArticlepeer-review

Abstract

Epitaxial films of Bi7 Mn3.75 Ti2.25 O21 were prepared to yield a previously unsynthesized material. The superlattice phase is produced by incorporating the magnetoelectric BiMn O3 into the perovskite substructure of the ferroelectric Bi4 Ti3 O12, a strategy which is hoped to yield previously undiscovered multiferroic materials. X-ray diffraction and transmission electron microscopy (TEM) confirm synthesis of an epitaxial n=6 Aurivillius phase. Magnetization measurements show ferromagnetic behavior with a Curie point of 55 K, but electronic polarization measurements show no remanent polarization. Rutherford backscattering spectrometry indicates a channeling minimum min of 22%, consistent with the high density of out-of-phase domain boundaries observed by TEM.

Original languageEnglish (US)
Article number033113
JournalApplied Physics Letters
Volume91
Issue number3
DOIs
StatePublished - 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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