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http://ir.ncue.edu.tw/ir/handle/987654321/15452
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| Title: | Coupling Strength with Off-axial External Field in Magnetic Tunnel Junction Cells |
| Authors: | Chao, C. T.;Kuo, C. Y.;Chen, C. C.;Horng, Lance;Chang, Y. J.;Wu, Te-Ho;Isogami, S.;Tsunoda, M.;Takahashi, M.;Wu, J. C. |
| Contributors: | 物理學系 |
| Date: | 2011
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| Issue Date: | 2013-02-05T02:20:49Z
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| Publisher: | American Institute of Physics |
| Abstract: | A series of hysteresis loops with off-axial external magnetic fields have been measured to identify magnetization reversal properties as well as coupling effects in magnetic tunnel junctions (MTJs). MTJ films, consisting of a synthetic artificial antiferromagnetic pinned layer of CoFeB/Ru/CoFe/IrMn, were patterned into an elliptical cell array with sizes of 200 × 300 nm and 500 × 750 nm. The hysteresis loops were measured using a vibrating sample magnetometer with various directions of the external magnetic field; the angle θ between the external magnetic field (E) and the biasing field of the pinned layer (B) was varied from 0° to 90°. The two significant coupling effects, ascribed to exchange bias between CoFe/IrMn and Ruderman–Kittel–Kasuya–Yosida–like coupling in CoFeB/Ru/CoFe, can be observed in these hysteresis loops. The angular dependence of the hysteresis loops is employed to characterize the variation of these coupling effects in extended and patterned MTJ films. |
| Relation: | J. Appl. Phys., 109(7): 07B911 |
| Appears in Collections: | [物理學系] 期刊論文
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