کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10714083 | 1025568 | 2012 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Exchange bias in (1Â 1Â 0)-orientated Bi0.9La0.1FeO3/La0.5Ca0.5MnO3 films
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We performed a systematic study on the exchange bias in (1Â 1Â 0)-orientated Bi0.9La0.1FeO3/La0.5Ca0.5MnO3 (BLFO/LCMO) heterostructure with a fixed BLFO film thickness of 600Â nm and different LCMO layers ranging from t=0 to 30Â nm. The LCMO is found to be weakly ferromagnetic, with the Curie temperature descending from â¼225Â K to 0 as the layer thickness decreases from 30Â nm to 3Â nm. The main magnetic contributions come from the BLFO film, and the areal magnetization ratio is 1:0.07 for t=5Â nm and 1:0.82 for t=30Â nm for BLFO to LCMO at the temperature of 5Â K. Further experiments show the presence of significant exchange bias, and it is, at the temperature of 10Â K, â¼40Â Oe for t=0 and â¼260Â Oe for t=30Â nm. The exchange bias reduces dramatically upon warming and disappears above the blocking temperature of the spin-glasslike behavior observed in the samples. The possible origin for exchange bias is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 14, 15 July 2012, Pages 2773-2777
Journal: Physica B: Condensed Matter - Volume 407, Issue 14, 15 July 2012, Pages 2773-2777
نویسندگان
J.L. Zhao, R.L. Gao, W.W. Gao, B.G. Shen, J.R. Sun,