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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
The structure and multifunctional behaviors of Mn-ZnO/Mn-ZnS nanocomposites
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
نویسندگان
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