Room temperature ferromagnetism and optical properties of Cu~(2+)doped ZnO nanopowder by ultrasound assisted solid state reaction technique

摘要

Cu~(2+) 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 Cu~(2+) ion occupied in tetragonally distorted octahedral site symmetry. The photo-luminescence (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.