| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8021002 | Materials Letters | 2014 | 5 Pages |
Abstract
Co-doped ZnO thin films were prepared by polymer-assisted deposition (PAD), and then treated by post-annealing in different atmospheres. XRD, SEM, TEM and SQUID were employed to characterize the samples, which demonstrate that all the samples are composed of nanocrystals and the annealing shows a robust effect on the enhancement of ferromagnetism at room temperature. PL measurements show that the improvement of ferromagnetism upon annealing is related to the decrease of oxygen interstitials (Oi) and the increase of Zn1â vacancies. XPS measurements indicate that post-annealing also induces oxygen vacancies, which have no positive contribution to the ferromagnetic ordering. Our results may suggest an effective way for modulation of structure and magnetic properties of Co-doped ZnO nanocrystal thin films.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Hongtao Ren, Gang Xiang, Gangxu Gu, Xi Zhang,