Journal
NANOSCALE RESEARCH LETTERS
Volume 5, Issue 4, Pages 769-772Publisher
SPRINGER
DOI: 10.1007/s11671-010-9555-8
Keywords
CuO; Nanoparticles; X-ray photoelectron spectroscopy; Room temperature ferromagnetism
Funding
- NSFC [50671046, 50801033]
- National Science Fund for Distinguished Young Scholars [50925103]
- Fundamental Research Funds for the Central Universities [Lzujbky-2009-162]
Ask authors/readers for more resources
Room temperature ferromagnetism (RTF) is observed in pure copper oxide (CuO) nanoparticles which were prepared by precipitation method with the post-annealing in air without any ferromagnetic dopant. X-ray photoelectron spectroscopy (XPS) result indicates that the mixture valence states of Cu1+ and Cu2+ ions exist at the surface of the particles. Vacuum annealing enhances the ferromagnetism (FM) of CuO nanoparticles, while oxygen atmosphere annealing reduces it. The origin of FM is suggested to the oxygen vacancies at the surface/or interface of the particles. Such a ferromagnet without the presence of any transition metal could be a very good option for a class of spintronics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
