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Structural and electromagnetic characterizations of Fe-SrF2 granular films

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/29630

Title: Structural and electromagnetic characterizations of Fe-SrF2 granular films
Authors: Hosoya, H. Browse this author
Arita, M. Browse this author →KAKEN DB
Hamada, K. Browse this author
Takahashi, Y. Browse this author
Higashi, K. Browse this author
Oda, K. Browse this author
Ueda, M. Browse this author
Keywords: Fe
SrF2
granular thin films
magnetoresistance
Issue Date: 21-Dec-2006
Publisher: IOP Publishing Ltd.
Journal Title: Journal of Physics D: Applied Physics
Volume: 39
Issue: 24
Start Page: 5103
End Page: 5108
Publisher DOI: 10.1088/0022-3727/39/24/001
Abstract: We investigate composite Fe–SrF2 films to explore new materials showing the granular-type tunnelling magnetoresistance (TMR) effect. The films are composed of Fe nano-particles embedded in a SrF2 matrix. The electromagnetic properties of the ferromagnetic metal–insulator films are confirmed, including super-paramagnetism, tunnel conduction and TMR. We obtain a TMR of 3% at RT and 5% at 77 K. The film resistivity is much higher than that of oxide-based granular film. We also fabricate the nanostructures of granular films and aim at the application of the single-electron transistor. As a result, we observed a Coulomb blockade (CB) region and CB oscillation at low temperature.
Rights: Copyright © 2006 IOP Publishing Ltd.
Relation: http://www.iop.org/
Type: article (author version)
URI: http://hdl.handle.net/2115/29630
Appears in Collections:情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 有田 正志

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