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Study of the structure and magnetic properties of Fe/Cu superlattices from first-principles

  • Beihang University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The structure and magnetic properties of fcc-Fe/Cu (100) superlattices have been investigated by the first-principles total energy calculation based on density functional theory (DFT). Through the optimization of the structure of Fe/Cu superlattices, it has been found that the interlayer spacing of Cu layers is contracted while the interlayer spacing of Fe layers is expanded. There are no obviously changes of Fe/Cu interfaces for Fe3Cu3 and Fe3Cu5 models. The layer spacing for Fe3Cu5 changes larger than that of Fe3Cu3 model, which results to a slightly larger magnetic moment of FeCu5 than that of Fe3Cu3 model. We also analyze the density of state near the Fermi surface and calculate spin asymmetry factor of each layer in Fe/Cu systems. Based on the two-current model, we evaluate the magnetoresistance ratio 21.8% for Fe3Cu3 and 22.8 % for Fe3Cu5 system.

源语言英语
主期刊名Progress in Light Metals, Aerospace Materials and Superconductors
出版商Trans Tech Publications Ltd
2223-2228
页数6
版本PART 4
ISBN(印刷版)0878494324, 9780878494323
DOI
出版状态已出版 - 2007
活动2006 Beijing International Materials Week, 2006 BIMW - International Conference on Superconducting Materials, ICSM 2006 - Beijing, 中国
期限: 25 6月 200630 6月 2006

出版系列

姓名Materials Science Forum
编号PART 4
546-549
ISSN(印刷版)0255-5476
ISSN(电子版)1662-9752

会议

会议2006 Beijing International Materials Week, 2006 BIMW - International Conference on Superconducting Materials, ICSM 2006
国家/地区中国
Beijing
时期25/06/0630/06/06

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