Magnetic properties of rutile Ti1-xFexO2 epitaxial thin films

Kazuhisa Inaba; Taro Hitosugi; Yasushi Hirose; Yutaka Furubayashi; Go Kinoda; Yukio Yamamoto; Tae Won Kim; Hiroshi Fujioka; Toshihiro Shimada; Tetsuya Hasegawa

doi:10.1143/JJAP.45.L114

Magnetic properties of rutile Ti_1-xFe_xO₂ epitaxial thin films

Kazuhisa Inaba, Taro Hitosugi, Yasushi Hirose, Yutaka Furubayashi, Go Kinoda, Yukio Yamamoto, Tae Won Kim, Hiroshi Fujioka, Toshihiro Shimada, Tetsuya Hasegawa

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

12 Citations (Scopus)

Abstract

Growth conditions for pulsed laser deposition of ferromagnetic Ti _1-xFe_xO₂ films with the rutile structure have been optimized on the basis of magnetooptical Kerr effect (MOKE) measurements. Thus, it was found that Ti_0.94Fe_0.06O₂ films prepared under very limited growth conditions, at a substrate temperature of 650-675°C and an oxygen pressure of ∼1 × 10_-6Torr, show ferromagnetism at room temperature. The optimized films revealed a saturation magnetization of 1.3 μB and a coercive field of 0.14kOe. From XPS measurements, the valence state of Fe was determined to be 3+, ruling out the possibility that ferromagnetism may arise from Fe₃O₄ nanoparticles.

Original language	English
Pages (from-to)	L114-L116
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	45
Issue number	4-7
DOIs	https://doi.org/10.1143/JJAP.45.L114
Publication status	Published - 2006 Feb 3

Keywords

Diluted magnetic semiconductor
Fe-doped
Ferromagnetism
Rutile
TiO

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy (miscellaneous)
Physics and Astronomy(all)

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Magnetic properties of rutile Ti_1-xFe_xO₂ epitaxial thin films. / Inaba, Kazuhisa; Hitosugi, Taro; Hirose, Yasushi; Furubayashi, Yutaka; Kinoda, Go; Yamamoto, Yukio; Kim, Tae Won; Fujioka, Hiroshi; Shimada, Toshihiro; Hasegawa, Tetsuya.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 45, No. 4-7, 03.02.2006, p. L114-L116.

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

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abstract = "Growth conditions for pulsed laser deposition of ferromagnetic Ti 1-xFexO2 films with the rutile structure have been optimized on the basis of magnetooptical Kerr effect (MOKE) measurements. Thus, it was found that Ti0.94Fe0.06O2 films prepared under very limited growth conditions, at a substrate temperature of 650-675°C and an oxygen pressure of ∼1 × 10-6Torr, show ferromagnetism at room temperature. The optimized films revealed a saturation magnetization of 1.3 μB and a coercive field of 0.14kOe. From XPS measurements, the valence state of Fe was determined to be 3+, ruling out the possibility that ferromagnetism may arise from Fe3O4 nanoparticles.",

keywords = "Diluted magnetic semiconductor, Fe-doped, Ferromagnetism, Rutile, TiO",

author = "Kazuhisa Inaba and Taro Hitosugi and Yasushi Hirose and Yutaka Furubayashi and Go Kinoda and Yukio Yamamoto and Kim, {Tae Won} and Hiroshi Fujioka and Toshihiro Shimada and Tetsuya Hasegawa",

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AU - Inaba, Kazuhisa

AU - Hitosugi, Taro

AU - Hirose, Yasushi

AU - Furubayashi, Yutaka

AU - Kinoda, Go

AU - Yamamoto, Yukio

AU - Kim, Tae Won

AU - Fujioka, Hiroshi

AU - Shimada, Toshihiro

AU - Hasegawa, Tetsuya

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AB - Growth conditions for pulsed laser deposition of ferromagnetic Ti 1-xFexO2 films with the rutile structure have been optimized on the basis of magnetooptical Kerr effect (MOKE) measurements. Thus, it was found that Ti0.94Fe0.06O2 films prepared under very limited growth conditions, at a substrate temperature of 650-675°C and an oxygen pressure of ∼1 × 10-6Torr, show ferromagnetism at room temperature. The optimized films revealed a saturation magnetization of 1.3 μB and a coercive field of 0.14kOe. From XPS measurements, the valence state of Fe was determined to be 3+, ruling out the possibility that ferromagnetism may arise from Fe3O4 nanoparticles.

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KW - TiO

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