Carrier mobility of iron oxide nanoparticles supported on ferroelectrics studied by Mössbauer spectroscopy

T. Okamoto; J. Kano; S. Nakamura; A. Fuwa; T. Otoyama; Y. Nakazaki; H. Hashimoto; Jun Takada; M. Ito; N. Ikeda

doi:10.1007/s10751-012-0687-3

Carrier mobility of iron oxide nanoparticles supported on ferroelectrics studied by Mössbauer spectroscopy

T. Okamoto, J. Kano, S. Nakamura, A. Fuwa, T. Otoyama, Y. Nakazaki, H. Hashimoto, Jun Takada, M. Ito, N. Ikeda

研究成果 › 査読

3 被引用数 (Scopus)

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⁵⁷Fe Mössbauer spectroscopy was performed on two types of Fe oxide nanoparticles supported on a typical ferroelectric, BaTiO3. It was found that the valence state of FeO nanoparticles changed to a mixed 2+/3+ state at high temperature where BaTiO₃ shows paraelectric behaviour. We attribute this phenomenon to the fluctuation of electric dipoles which realizes carrier injection into the Fe oxides. This is the first report which discusses a dynamical valence state of transition metal oxides supported on ferroelectrics.

本文言語	English
ページ（範囲）	147-152
ページ数	6
ジャーナル	Hyperfine Interactions
巻	219
号	1-3
DOI	https://doi.org/10.1007/s10751-012-0687-3
出版ステータス	Published - 4月 2013

ASJC Scopus subject areas

原子分子物理学および光学
核物理学および高エネルギー物理学
凝縮系物理学
物理化学および理論化学

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10.1007/s10751-012-0687-3

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abstract = "57Fe M{\"o}ssbauer spectroscopy was performed on two types of Fe oxide nanoparticles supported on a typical ferroelectric, BaTiO3. It was found that the valence state of FeO nanoparticles changed to a mixed 2+/3+ state at high temperature where BaTiO3 shows paraelectric behaviour. We attribute this phenomenon to the fluctuation of electric dipoles which realizes carrier injection into the Fe oxides. This is the first report which discusses a dynamical valence state of transition metal oxides supported on ferroelectrics.",

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author = "T. Okamoto and J. Kano and S. Nakamura and A. Fuwa and T. Otoyama and Y. Nakazaki and H. Hashimoto and Jun Takada and M. Ito and N. Ikeda",

note = "Funding Information: Acknowledgement This work was partly supported by JSPS Grant-in-Aid for Challenging Exploratory Research Grant Number 24654089.",

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doi = "10.1007/s10751-012-0687-3",

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T1 - Carrier mobility of iron oxide nanoparticles supported on ferroelectrics studied by Mössbauer spectroscopy

AU - Okamoto, T.

AU - Kano, J.

AU - Nakamura, S.

AU - Fuwa, A.

AU - Otoyama, T.

AU - Nakazaki, Y.

AU - Hashimoto, H.

AU - Takada, Jun

AU - Ito, M.

AU - Ikeda, N.

N1 - Funding Information: Acknowledgement This work was partly supported by JSPS Grant-in-Aid for Challenging Exploratory Research Grant Number 24654089.

PY - 2013/4

Y1 - 2013/4

N2 - 57Fe Mössbauer spectroscopy was performed on two types of Fe oxide nanoparticles supported on a typical ferroelectric, BaTiO3. It was found that the valence state of FeO nanoparticles changed to a mixed 2+/3+ state at high temperature where BaTiO3 shows paraelectric behaviour. We attribute this phenomenon to the fluctuation of electric dipoles which realizes carrier injection into the Fe oxides. This is the first report which discusses a dynamical valence state of transition metal oxides supported on ferroelectrics.

AB - 57Fe Mössbauer spectroscopy was performed on two types of Fe oxide nanoparticles supported on a typical ferroelectric, BaTiO3. It was found that the valence state of FeO nanoparticles changed to a mixed 2+/3+ state at high temperature where BaTiO3 shows paraelectric behaviour. We attribute this phenomenon to the fluctuation of electric dipoles which realizes carrier injection into the Fe oxides. This is the first report which discusses a dynamical valence state of transition metal oxides supported on ferroelectrics.

KW - Electric dipole

KW - Ferroelectric

KW - Mössbauer spectroscopy

KW - Nanoparticles

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JO - Hyperfine Interaction

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Carrier mobility of iron oxide nanoparticles supported on ferroelectrics studied by Mössbauer spectroscopy

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