Multiferroism at room temperature in BiFeO3/BiCrO 3(111) artificial superlattices

Noriya Ichikawa, Masaya Arai, Yusuke Imai, Kei Hagiwara, Hiroshi Sakama, Masaki Azuma, Yuichi Shimakawa, Mikio Takano, Yasutoshi Kotaka, Masashi Yonetani, Hironori Fujisawa, Masaru Shimizu, Kenya Ishikawa, Yasuo Cho

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


We report the fabrication of BiFeO3/BiCrO3(111) artificial superlattices with 1/1 stacking in a layer-by-layer growth mode on atomically flat SrTiO3(111) surfaces. While BiFeO3 and BiCrO3 are antiferromagnets having Fe-O-Fe and Cr-O-Cr bonds, these superlattices contain Fe-O-Cr bonds, in which ferromagnetic interaction is expected. Magnetization measurements at 300 K revealed that the magnetic moment per transition metal ion was 1.7 μB, suggesting ferromagnetic spin order. Ferroelectric behavior at room temperature was confirmed by an analysis using a scanning non-linear dielectric microscope.

Original languageEnglish
Pages (from-to)1013021-1013023
Number of pages3
JournalApplied Physics Express
Issue number10
Publication statusPublished - 2008 Oct


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