| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1803638 | Journal of Magnetism and Magnetic Materials | 2006 | 5 Pages |
Abstract
The effects of annealing procedures on the structural and magnetic properties of the LSMO films epitaxially grown on (1 0 0) LaAlO3 (LAO) and SrTiO3 (STO) substrates have been studied. A gradual lattice contraction is observed with the increase of annealing temperatures. This can be explained as the increase in Mn4+/Mn3+ ratio before it reached the ideal one value (3:7). Annealing procedures at the higher temperatures can enhance the ferromagnetic order and Curie temperature (Tc) and dramatically reduce the coercivity values due to the increase in the oxygen content. On the other hand, a larger surface roughness caused by the lattice mismatch between the films and the substrates is presumably responsible for a higher coercivity.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Y.S. Du, B. Wang, T. Li, D.B. Yu, H. Yan,