کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1799796 | 1524865 | 2014 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Room temperature ferromagnetism and optical properties of Cu2+ doped ZnO nanopowder by ultrasound assisted solid state reaction technique Room temperature ferromagnetism and optical properties of Cu2+ doped ZnO nanopowder by ultrasound assisted solid state reaction technique](/preview/png/1799796.png)
• Cu2+ doped ZnO nanopowder was prepared through sonication.
• PL spectrum shows two sharp and strong bands in UV, blue emissions.
• The site symmetry for Cu2+ ions is tetragonally elongated distorted octahedral.
• It exhibits strong ferromagnetism at room temperature.
Cu2+ doped ZnO nanopowder was synthesized with the assistance of sonochemical method. Powder X-ray diffraction data confirms the prepared powder exhibit hexagonal wurtzite structure. From optical and EPR studies the Cu2+ ion occupied in tetragonally distorted octahedral site symmetry. The photoluminescence (PL) spectrum at room temperature shows a strong ultraviolet emission (~378) and a strong, dominated defect related deep level emission (~435) in visible regions. Vibrational bands related to metal oxide bonding are evident form FT-IR studies. The magnetic measurement of the prepared sample shows good ferromagnetic property at room temperature.
Journal: Journal of Magnetism and Magnetic Materials - Volume 355, April 2014, Pages 76–80