2009年8月
Effect of substrate temperature on the room-temperature ferromagnetism of Cu-doped ZnO films
JOURNAL OF CRYSTAL GROWTH
- ,
- ,
- ,
- 巻
- 311
- 号
- 17
- 開始ページ
- 4270
- 終了ページ
- 4274
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jcrysgro.2009.07.008
- 出版者・発行元
- ELSEVIER SCIENCE BV
Wurtzite structure ZnO films doped with similar to 2 at% Cu were deposited at substrate temperatures (T-s) from 350 to 600 degrees C by helicon magnetton sputtering. All the films exhibited room-temperature (RT) ferromagnetism (FM) and the maximum saturation magnetization (M-s) was 1.2 emu/cm(3) (similar to 0.15 mu(B)/Cu). Cu ions were mainly in a divalent state as identified by X-ray photoelectron spectroscopy. FM tended to increase with decreasing T-s, and vacuum annealing enhanced the M-s. These results suggested that oxygen vacancies and/or zinc interstitials might contribute to the ferromagnetic performance. Thus, the observed FM was explained in terms of the defect related mechanism. (C) 2009 Elsevier B.V. All rights reserved.
- リンク情報
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- DOI
- https://doi.org/10.1016/j.jcrysgro.2009.07.008
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000269992200021&DestApp=WOS_CPL
- URL
- http://www.scopus.com/inward/record.url?eid=2-s2.0-68549083537&partnerID=MN8TOARS
- URL
- http://orcid.org/0000-0002-4113-5548
- ID情報
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- DOI : 10.1016/j.jcrysgro.2009.07.008
- ISSN : 0022-0248
- ORCIDのPut Code : 24004596
- SCOPUS ID : 68549083537
- Web of Science ID : WOS:000269992200021