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
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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