کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1611554 | 1516297 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and magnetic characterization of a Cu80Co20 thin film obtained by electrodeposition technique
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
A granular Cu80Co20 alloy was elaborated by a low cost electrodeposition technique consisting in reducing simultaneously the Cu2+ and Co2+ ions onto a silicon substrate. The deposition parameters were determined from current-potential curves. The structure of the film was characterized down to the atomic scale by transmission electron microscopy and atom probe tomography. The results show that the as-deposited Cu80Co20 thin film consists mainly of a paramagnetic Cu-Co solid solution containing 10-30% of Co, in which pure Co superparamagnetic nanoparticles are dissolved. Annealing at 500 °C for 1 h leads to the decomposition of the Cu-Co solid solution into purified Cu matrix containing ferromagnetic Co-rich precipitates. The magnetoresistance effect decreases after the heat treatment, in relation with the disappearance of the superparamagnetic Co nanoparticles upon annealing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 596, 25 May 2014, Pages 118-124
Journal: Journal of Alloys and Compounds - Volume 596, 25 May 2014, Pages 118-124
نویسندگان
Julien Bran, Malick Jean, Rodrigue Lardé, Xavier Sauvage, Jean-Marie Le Breton, Sandrine Morin-Grognet, Alain Pautrat,