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

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 - Apr 2013

Keywords

Electric dipole
Ferroelectric
Mössbauer spectroscopy
Nanoparticles

ASJC Scopus subject areas

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

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10.1007/s10751-012-0687-3

Cite this

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title = "Carrier mobility of iron oxide nanoparticles supported on ferroelectrics studied by M{\"o}ssbauer spectroscopy",

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.",

keywords = "Electric dipole, Ferroelectric, M{\"o}ssbauer spectroscopy, Nanoparticles",

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.",

year = "2013",

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

language = "English",

volume = "219",

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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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DO - 10.1007/s10751-012-0687-3

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VL - 219

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JO - Hyperfine Interactions

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

Abstract

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