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https://hdl.handle.net/2445/10930
Title: | Magnetic fingerprints of the very fast jumps of colossal magnetoresistance in the phase-separated manganite La0.225Pr0.40Ca0.375MnO3 |
Author: | Macià Bros, Ferran Abril, Guillem Hernández Mínguez, Alberto Hernández Ferràs, Joan Manel Tejada Palacios, Javier Parisi, F. |
Keywords: | Materials magnètics Propietats magnètiques Magnetic materials Magnetic properties |
Issue Date: | 2008 |
Publisher: | The American Physical Society |
Abstract: | We found that colossal variations of resistance in La 0.225 Pr 0.40 Ca 0.375 Mn O 3 in about 100 μ s occur simultaneously with magnetic avalanches that last about 1 ms . These findings are interpreted as macroscopic fingerprints of the percolative phase separation upon application of the external magnetic field. Depending on the fraction of the ferromagnetic phase x , the colossal magnetoresistance jumps appear to be caused either by fluctuations of x , accompanied by fast propagation of the magnetic avalanches through the sample, or by a phase transition from charge ordered antiferromagnetic phase to charge delocalized ferromagnetic phase. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.77.012403 |
It is part of: | Physical Review B, 2008, vol. 77, núm 1, p. 012403-1-012403-4 |
URI: | https://hdl.handle.net/2445/10930 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.77.012403 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
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