| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1803213 | Journal of Magnetism and Magnetic Materials | 2009 | 5 Pages |
Abstract
A series of Cox(Alq3)1−x granular films were prepared using the co-evaporating technique. HRTEM images show typical characteristics of granular films with the average size of 2–5 nm. It shows a gradual change from superparamagnetism to ferromagnetism with the rise of x. Negative magnetoresistance (MR) was observed, reaching −5.31% in x=0.44 sample at 30 K under the field of 10 kOe. The concentration dependence of MR and resistivity is also investigated. The inter-particle tunneling is believed to account for the negative MR effect.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
X.M. Zhao, G. Ni, Q. Shu, P. Sheng, J.Q. Wu, J.F. Yin, B. Ma, Q.Y. Jin,