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
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,