کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5006241 | 1461390 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structure and properties variations in Zn1âxCoxO nanorods prepared by microwave-assisted hydrothermal method
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
ZnO and Co-doped ZnO nanopowders were synthesized by microwave-assisted hydrothermal method. The composition dependent morphology, structure, optical, and magnetic properties were systematically investigated. Self-assembly of nanoflower structure was obtained for ZnO nanorods without doping, but Co doping led to the disappearance of nanoflower feature. Structural and properties characterizations indicated that Co was incorporated into the Zn-site of ZnO lattice without formation of second phase. The intensity of photoluminescence spectrum decreased with Co doping although all samples showed blue emission. Co doping also led to a red shift in band gap due to sp-d exchange interaction between the band electrons and the localized electrons of Co2+ cations. In addition, the room-temperature ferromagnetism could be modified by the doping amount of Co.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science in Semiconductor Processing - Volume 57, January 2017, Pages 233-238
Journal: Materials Science in Semiconductor Processing - Volume 57, January 2017, Pages 233-238
نویسندگان
M. Fang, Z.W. Liu,