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"Magnetoresistive memory in phase-separated La0.5Ca0.5MnO3"
J. Sacanell, F. Parisi, P. Levya and L. Ghivelder
Proc. of the Workshop "At the Frontiers of Condensed Matter II - Magnetism, Magnetic Materials, and their Applications", Buenos Aires, Argentina, June 22-26, 2004. Ed. C. Saragovi, J. Guevara, R. Weht, A.M. Llois and M.T. Causa
Physica B Condens. Matter. 354(1-4) (2004) 43-46
We have studied a non-volatile memory effect in the mixed valent compound La0.5Ca0.5MnO3 induced by magnetic field (H). In a previous work (Phys. Rev. B 65 (2002) 104403), it has been shown that the response of this system upon application of H strongly depends on the temperature range, related to three well-differentiated regimes of phase separation occurring below 220 K. In this work we compare memory capabilities of the compound, determined following two different experimental procedures for applying H, namely zero-field cooling and field cooling the sample. These results are analyzed and discussed within the scenario of phase separation.
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