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https://ah.lib.nccu.edu.tw/handle/140.119/70510
題名: | Coercive mechanism and training effect in Fe-Au/Ni-Fe bilayer films | 作者: | 李尚凡 Yuan,Fu-Te ;Yao,Y. D. ;Lee,S. F. ;Hsu,J. H. |
貢獻者: | 應物所 | 日期: | Apr-2011 | 上傳時間: | 9-Oct-2014 | 摘要: | Exchange bias effect in spin glass/ferromagnetic systems has been studied recently. Here, we report the coercive mechanism and training effect in Fe-Au/Ni-Fe films. Experimental results indicate that the coercivity (H c) mainly originates from direct coupling between Fe-Au and Ni-Fe layers at temperatures (T) well below the blocking point (T b). At T near T b, H c comes from spin-flop coupling and defects in the Ni-Fe layer. The findings confirm the validity of our spin structure model. Additionally, irreversible rearrangement of Fe-Au spins from the field cooling state was indicated by the training effect of both Fe-Au/Ni-Fe and Fe-Au powder samples. The results are discussed in detail. | 關聯: | Journal of Applied Physics,109(7),07E148 | 資料類型: | article | DOI: | http://dx.doi.org/10.1063/1.3562903 |
Appears in Collections: | 期刊論文 |
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File | Description | Size | Format | |
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07E148.pdf | 1.59 MB | Adobe PDF2 | View/Open |
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