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

doi:10.1143/APEX.1.101302

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

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

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 μ_B, suggesting ferromagnetic spin order. Ferroelectric behavior at room temperature was confirmed by an analysis using a scanning non-linear dielectric microscope.

Original language	English
Pages (from-to)	1013021-1013023
Number of pages	3
Journal	Applied Physics Express
Volume	1
Issue number	10
DOIs	https://doi.org/10.1143/APEX.1.101302
Publication status	Published - 2008 Oct

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title = "Multiferroism at room temperature in BiFeO3/BiCrO 3(111) artificial superlattices",

abstract = "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.",

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

year = "2008",

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T1 - Multiferroism at room temperature in BiFeO3/BiCrO 3(111) artificial superlattices

AU - Ichikawa, Noriya

AU - Arai, Masaya

AU - Imai, Yusuke

AU - Hagiwara, Kei

AU - Sakama, Hiroshi

AU - Azuma, Masaki

AU - Shimakawa, Yuichi

AU - Takano, Mikio

AU - Kotaka, Yasutoshi

AU - Yonetani, Masashi

AU - Fujisawa, Hironori

AU - Shimizu, Masaru

AU - Ishikawa, Kenya

AU - Cho, Yasuo

PY - 2008/10

Y1 - 2008/10

N2 - 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.

AB - 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.

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

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