کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624957 | 989613 | 2014 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The structure and multifunctional behaviors of Mn-ZnO/Mn-ZnS nanocomposites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Mn-ZnO/Mn-ZnS nanocomposites have been synthesized by using Mn-ZnO nanorods as templates through a simple sulfidation reaction. The incorporated Mn dopants are in 2+ valence state and substitute for Zn2+ ions in both ZnO and ZnS host lattice. The Mn-ZnO nanorods display robust ferromagnetism as well as weak ultraviolet and visible emissions at room temperature. The coating of Mn-ZnS layer results in the decrease of ferromagnetism and the significant enhancement of visible emission in orange region. Meanwhile, the band gap of the nanocomposites increases as the sulfidation time prolongs. By studying the variation of ferromagnetism with the sulfidation time, it is concluded that the observed strong ferromagnetism in Mn-ZnO nanorods mainly originates from the surface region where the ferromagnetism is much stronger relative to the core area of the nanorods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 40, Issue 9, Part A, November 2014, Pages 13847-13854
Journal: Ceramics International - Volume 40, Issue 9, Part A, November 2014, Pages 13847-13854
نویسندگان
Xiaofang Liu, Xiaobo Chen, Xinrui Cui, Ronghai Yu,