Magnetic Anisotropy of Ni-Doped ZnO Nanocrystalline Thin Films
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概要
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We report structural and magnetization properties of nickel-doped zinc oxide thin films prepared on Si substrates by spray pyrolysis technique. Grazing angle X-ray diffraction measurements confirm the wurtzite structure of Zn1-xNixO films and no secondary phase was found for ZnO thin films doped with 5% Ni or less. Hysteresis measurements demonstrate that the Ni-doped ZnO films are magnetically anisotropic and they exhibit intrinsic ferromagnetic behavior at room temperature. Higher magnetization in 3 kOe is observed for a field applied perpendicular to the sample surface compared with the in-plane direction.
- 2010-06-25
著者
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Fan-Yong Ran
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Munisamy Subramanian
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
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Subramanian Munisamy
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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Tetsuo Soga
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
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Takehiko Hihara
Department of Materials Science and Engineering, Nagoya Institute Technology, Nagoya 466-8555, Japan
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Tanemura Masaki
Department of Environmental Technology & Urban Planning, Nagoya Institute of Technology, Gokisho-cho, Showa-ku, Nagoya 466-8555, Japan
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Masaki Tanemura
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
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Ran Fan-Yong
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Takashi Jimbo
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
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