Ferromagnetism in Co-doped TiO2 rutile thin films grown by laser molecular beam epitaxy

Yuji Matsumoto; Ryota Takahashi; Makoto Murakami; Takashi Koida; Xiao Juan Fan; Tetsuya Hasegawa; Tomoteru Fukumura; M. Kawasaki; Shin Ya Koshihara; Hideomi Koinuma

doi:10.1143/jjap.40.l1204

Ferromagnetism in Co-doped TiO₂ rutile thin films grown by laser molecular beam epitaxy

Yuji Matsumoto, Ryota Takahashi, Makoto Murakami, Takashi Koida, Xiao Juan Fan, Tetsuya Hasegawa, Tomoteru Fukumura, M. Kawasaki, Shin Ya Koshihara, Hideomi Koinuma

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

188 Citations (Scopus)

Abstract

Epitaxial TiO₂ rutile films were fabricated on α-Al₂O₃ (101̄2) substrate in the layer-by-layer fashion laser molecular beam epitaxy. Ablation with a Co-doped TiO₂ target produced single phase of rutile film with the concentration of Co between 0 and 5%. Some ferromagnetic domain structures were observed in Co_xTi_1-xO₂ rutile films by a scanning superconducting quantum interference device microscope at 3 to 90 K. The magnetic hysteresis could also be observed even at room temperature with a magnetic moment of ∼ 1 μ_B/Co atom.

Original language	English
Pages (from-to)	L1204-L1206
Journal	Japanese Journal of Applied Physics
Volume	40
Issue number	11 B
DOIs	https://doi.org/10.1143/jjap.40.l1204
Publication status	Published - 2001 Nov 15

Keywords

Combinatorial chemistry
Laser MBE
Magnetism
Oxide
Scanning SQUID microscope
Thin film
TiO
Transition metal

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10.1143/jjap.40.l1204

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title = "Ferromagnetism in Co-doped TiO2 rutile thin films grown by laser molecular beam epitaxy",

abstract = "Epitaxial TiO2 rutile films were fabricated on α-Al2O3 (10{\=1}2) substrate in the layer-by-layer fashion laser molecular beam epitaxy. Ablation with a Co-doped TiO2 target produced single phase of rutile film with the concentration of Co between 0 and 5%. Some ferromagnetic domain structures were observed in CoxTi1-xO2 rutile films by a scanning superconducting quantum interference device microscope at 3 to 90 K. The magnetic hysteresis could also be observed even at room temperature with a magnetic moment of ∼ 1 μB/Co atom.",

keywords = "Combinatorial chemistry, Laser MBE, Magnetism, Oxide, Scanning SQUID microscope, Thin film, TiO, Transition metal",

author = "Yuji Matsumoto and Ryota Takahashi and Makoto Murakami and Takashi Koida and Fan, {Xiao Juan} and Tetsuya Hasegawa and Tomoteru Fukumura and M. Kawasaki and Koshihara, {Shin Ya} and Hideomi Koinuma",

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doi = "10.1143/jjap.40.l1204",

language = "English",

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TY - JOUR

T1 - Ferromagnetism in Co-doped TiO2 rutile thin films grown by laser molecular beam epitaxy

AU - Matsumoto, Yuji

AU - Takahashi, Ryota

AU - Murakami, Makoto

AU - Koida, Takashi

AU - Fan, Xiao Juan

AU - Hasegawa, Tetsuya

AU - Fukumura, Tomoteru

AU - Kawasaki, M.

AU - Koshihara, Shin Ya

AU - Koinuma, Hideomi

PY - 2001/11/15

Y1 - 2001/11/15

N2 - Epitaxial TiO2 rutile films were fabricated on α-Al2O3 (101̄2) substrate in the layer-by-layer fashion laser molecular beam epitaxy. Ablation with a Co-doped TiO2 target produced single phase of rutile film with the concentration of Co between 0 and 5%. Some ferromagnetic domain structures were observed in CoxTi1-xO2 rutile films by a scanning superconducting quantum interference device microscope at 3 to 90 K. The magnetic hysteresis could also be observed even at room temperature with a magnetic moment of ∼ 1 μB/Co atom.

AB - Epitaxial TiO2 rutile films were fabricated on α-Al2O3 (101̄2) substrate in the layer-by-layer fashion laser molecular beam epitaxy. Ablation with a Co-doped TiO2 target produced single phase of rutile film with the concentration of Co between 0 and 5%. Some ferromagnetic domain structures were observed in CoxTi1-xO2 rutile films by a scanning superconducting quantum interference device microscope at 3 to 90 K. The magnetic hysteresis could also be observed even at room temperature with a magnetic moment of ∼ 1 μB/Co atom.

KW - Combinatorial chemistry

KW - Laser MBE

KW - Magnetism

KW - Oxide

KW - Scanning SQUID microscope

KW - Thin film

KW - TiO

KW - Transition metal

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DO - 10.1143/jjap.40.l1204

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SP - L1204-L1206

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 11 B

ER -

Ferromagnetism in Co-doped TiO₂ rutile thin films grown by laser molecular beam epitaxy

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Keywords

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