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Structural and electromagnetic characterizations of Fe-SrF2 granular films
| 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)
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Submitter: 有田 正志
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