Size dependence of defect-induced room temperature ferromagnetism in undoped ZnO nanoparticles

• Main Authors: Xu, Xiaoyong, Xu, Chunxiang, Dai, Jun, Hu, Jingguo, Li, Fengji, Zhang, Sam
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Science::Chemistry::Physical chemistry
• Online Access: https://hdl.handle.net/10356/99145; http://hdl.handle.net/10220/17226
• Institution: Nanyang Technological University

We report the intrinsic room-temperature ferromagnetism in undoped ZnO nanoparticles with different sizes synthesized by a wet chemical method at different temperatures. Electron paramagnetic resonance, X-ray photoelectron spectroscopy, and photoluminescence measurements demonstrate clearly the sing...