کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7993045 | 1516150 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electron beam reduction induced self-assembly growth of Co/CoO nanocomposite materials
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Electron beam irradiation (EBI) technology has been widely used in industrial fields during the welding process, and the instantaneous high temperature produced during this process is a significant advantage for the synthesis of metallic materials. Here, we report a method to manufacture metal/oxide nanocomposite materials by EBI using oxide films. The CoO films are first prepared by a pulsed-laser deposition technique, and the as-prepared films are treated by EBI with different electron doses. CoO can be controllably reduced to metallic Co, and a Co/CoO nanocomposite is produced with a large number of oxygen vacancies after EBI. The self-assembled well-dispersed Co nanoparticles are formed on the film surface, and their sizes can be controlled by the electron dose and irradiation time. The obtained Co/CoO composited nanoparticle films exhibit an exchange bias effect, and their blocking temperature can be modified by variations in the electron dose and time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 744, 5 May 2018, Pages 615-620
Journal: Journal of Alloys and Compounds - Volume 744, 5 May 2018, Pages 615-620
نویسندگان
Shilei Ding, Mingzhu Xue, Rui Wu, Youfang Lai, Yong Men, Xiangdong Kong, Li Han, Jingzhi Han, Wenyun Yang, Yingchang Yang, Honglin Du, Changsheng Wang, Jinbo Yang,