Spin structure change in Co-substituted BiFeO3

Hajime Yamamoto; Takumi Kihara; Kengo Oka; Masashi Tokunaga; Ko Mibu; Masaki Azuma

doi:10.7566/JPSJ.85.064704

Spin structure change in Co-substituted BiFeO₃

Hajime Yamamoto, Takumi Kihara, Kengo Oka, Masashi Tokunaga, Ko Mibu, Masaki Azuma

IMRAM - Division of Measurements

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23 Citations (Scopus)

Abstract

The spin structure in BiFe_1-xCo_xO₃ (x = 0.05, 0.10, 0.15, 0.20) was investigated as a function of Co substitution, temperature, and magnetic field. It was found that the cycloidal spin structure of BiFeO₃ changed to a collinear one with spin canting and composition-independent spontaneous magnetization of ∼0.25 μ_B/f.u. for the Co substituted samples on heating. The collinear phase was stabilized under magnetic fields. The spin structure change was clarified also by the temperature dependence of ⁵⁷Fe Mössbauer spectra, and the results indicated the first order nature of this transition.

Original language	English
Article number	064704
Journal	Journal of the Physical Society of Japan
Volume	85
Issue number	6
DOIs	https://doi.org/10.7566/JPSJ.85.064704
Publication status	Published - 2016 Jun 15

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title = "Spin structure change in Co-substituted BiFeO3 ",

abstract = "The spin structure in BiFe1-xCoxO3 (x = 0.05, 0.10, 0.15, 0.20) was investigated as a function of Co substitution, temperature, and magnetic field. It was found that the cycloidal spin structure of BiFeO3 changed to a collinear one with spin canting and composition-independent spontaneous magnetization of ∼0.25 μB/f.u. for the Co substituted samples on heating. The collinear phase was stabilized under magnetic fields. The spin structure change was clarified also by the temperature dependence of 57Fe M{\"o}ssbauer spectra, and the results indicated the first order nature of this transition.",

author = "Hajime Yamamoto and Takumi Kihara and Kengo Oka and Masashi Tokunaga and Ko Mibu and Masaki Azuma",

note = "Funding Information: This work was partially supported by Grants-in-Aid for Creative Scientific Research (26106507) from the Japan Society for the Promotion of Science (JSPS). Magnetization measurements under pulsed magnetic field were carried out under the Visiting Researcher's Program of the Institute for Solid State Physics, the University of Tokyo. The M{\"o}ssbauer spectroscopic experiments were performed under the Nanotechnology Platform Project of MEXT, Japan. Publisher Copyright: {\textcopyright}2016 The Physical Society of Japan.",

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doi = "10.7566/JPSJ.85.064704",

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T1 - Spin structure change in Co-substituted BiFeO3

AU - Yamamoto, Hajime

AU - Kihara, Takumi

AU - Oka, Kengo

AU - Tokunaga, Masashi

AU - Mibu, Ko

AU - Azuma, Masaki

N1 - Funding Information: This work was partially supported by Grants-in-Aid for Creative Scientific Research (26106507) from the Japan Society for the Promotion of Science (JSPS). Magnetization measurements under pulsed magnetic field were carried out under the Visiting Researcher's Program of the Institute for Solid State Physics, the University of Tokyo. The Mössbauer spectroscopic experiments were performed under the Nanotechnology Platform Project of MEXT, Japan. Publisher Copyright: ©2016 The Physical Society of Japan.

PY - 2016/6/15

Y1 - 2016/6/15

N2 - The spin structure in BiFe1-xCoxO3 (x = 0.05, 0.10, 0.15, 0.20) was investigated as a function of Co substitution, temperature, and magnetic field. It was found that the cycloidal spin structure of BiFeO3 changed to a collinear one with spin canting and composition-independent spontaneous magnetization of ∼0.25 μB/f.u. for the Co substituted samples on heating. The collinear phase was stabilized under magnetic fields. The spin structure change was clarified also by the temperature dependence of 57Fe Mössbauer spectra, and the results indicated the first order nature of this transition.

AB - The spin structure in BiFe1-xCoxO3 (x = 0.05, 0.10, 0.15, 0.20) was investigated as a function of Co substitution, temperature, and magnetic field. It was found that the cycloidal spin structure of BiFeO3 changed to a collinear one with spin canting and composition-independent spontaneous magnetization of ∼0.25 μB/f.u. for the Co substituted samples on heating. The collinear phase was stabilized under magnetic fields. The spin structure change was clarified also by the temperature dependence of 57Fe Mössbauer spectra, and the results indicated the first order nature of this transition.

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JF - Journal of the Physical Society of Japan

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ER -

Spin structure change in Co-substituted BiFeO₃

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