کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8162711 | 1525198 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Large exchange-bias in Ni55Mn19Al24Si2 polycrystalline ribbons
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The crystal structure, phase transition and exchange bias effect in induction melted polycrystalline ribbons of Ni55Mn19Al24Si2 have been studied using room temperature x-ray diffraction (XRD), differential scanning calorimetry (DSC) and magnetic measurements. The sample was found to show structural transformation temperatures such as austenite start (As)=306Â K, austenite finish (Af)=316Â K, martensite start (Ms)=305Â K and martensite finish (Mf)=294Â K all above room temperature. The room temperature structure evaluated as orthorhombic 14Â M with lattice parameters a=4.14Â Ã
, b=29.84Â Ã
, and c=5.72Â Ã
. Importantly at ~2Â K, the sample showed a large exchange bias field of about 2520Â Oe, which is the maximum value ever reported among the Heusler alloy samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 448, 1 September 2014, Pages 143-146
Journal: Physica B: Condensed Matter - Volume 448, 1 September 2014, Pages 143-146
نویسندگان
Rohit Singh, Babita Ingale, Lajos K. Varga, Vladimir V. Khovaylo, Ratnamala Chatterjee,