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; J. 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, J. Takada, M. Ito, N. Ikeda

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	147-152
Number of pages	6
Journal	Hyperfine Interactions
Volume	219
Issue number	1-3
DOIs	https://doi.org/10.1007/s10751-012-0687-3
Publication status	Published - 2013

Keywords

Electric dipole
Ferroelectric
Mössbauer spectroscopy
Nanoparticles

ASJC Scopus subject areas

Condensed Matter Physics
Nuclear and High Energy Physics
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry

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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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year = "2013",

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

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journal = "Hyperfine Interaction",

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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, J.

AU - Ito, M.

AU - Ikeda, N.

PY - 2013

Y1 - 2013

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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DO - 10.1007/s10751-012-0687-3

M3 - Article

AN - SCOPUS:84876170824

SN - 0304-3843

VL - 219

SP - 147

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JO - Hyperfine Interaction

JF - Hyperfine Interaction

IS - 1-3

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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