| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1804763 | Journal of Magnetism and Magnetic Materials | 2006 | 4 Pages |
Abstract
Polycrystals of double-layered perovskite La2−2xSr1+2xMn2O7 (x=0.3x=0.3,0.33,0.4) were prepared by solid-state reactions at the same temperature. We have performed resistance and magnetization measurements on these samples. They exhibit both colossal magnetoresistance (CMR) (MR>64% for H=5T) near magnetic transition Tc, and 2D short-range magnetic order. Additionally, these compounds showed two distinct resistance peaks. The resistance peak near Tc was sharp, whereas the second peak below Tc was a broad one. Especially, it is notice that there are wide plateaus of CMR form Tc to 20 K for two samples.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
Aihua Wang, Guohui Cao,