Artículo
Abstract:
We have studied magnetic and transport properties on different manganese-oxide-based compounds exhibiting phase separation: polycrystalline La5/8-yPryCa3/8MnO3 (y = 0.3) and La1/2Ca1/2Mn1-zFezO3 (z = 0.05), and single crystals of La5/8-yPryCa3/8MnO3 (y∼0.35). Time dependent effects indicate that the fractions of the coexisting phases are dynamically changing in a definite temperature range. We found that in this range the ferromagnetic fraction "f" can be easily tuned by application of low magnetic fields (<1 T). The effect is persistent after the field is turned off; thus, the field remains imprinted in the actual value of "f" and can be recovered through transport measurements. This effect is due both to the existence of a true phase separated equilibrium state with definite equilibrium fraction "f0", and to the slow growth dynamics. The fact that the same global features were found on different compounds and in polycrystalline and single crystalline samples, suggests that the effect is a general feature of some phase separated media. © 2002 Elsevier Science B.V. All rights reserved.
Registro:
| Documento: | Artículo |
| Título: | Persistent magnetoresistive memory in phase separated manganites |
| Autor: | Levy, P.; Parisi, F.; Sacanell, J.; Granja, L.; Quintero, M.; Curiale, J.; Polla, G.; Leyva, G.; Freitas, R.S.; Ghivelder, L.; Acha, C.; Koo, T.Y.; Cheong, S.-W. |
| Ciudad: | Moscow |
| Filiación: | U.A. Física, CAC, CNEA, San Martin, Pcia. Buenos Aires, Argentina Instituto de Física, Univ. Federal do Rio de Janeiro, Rio de Janeiro, Brazil Lab. Bajas Temperaturas, FCEyN, UBA, Buenos Aires, Argentina Comision Nacional de Energia Atomica, CAC, U.A. Física, Av. Gral Paz 1499, 1650 San Martin, Argentina |
| Palabras clave: | Magnetoresistance; Manganites; Phase separation; Ferromagnetism; Manganese compounds; Phase separation; Polycrystalline materials; Transport properties; Correlated electron systems; Magnetoresistance |
| Año: | 2003 |
| Volumen: | 258-259 |
| Página de inicio: | 293 |
| Página de fin: | 295 |
| DOI: | http://dx.doi.org/10.1016/S0304-8853(02)01140-X |
| Título revista: | Second Moscow International Symposium on Magnetism (MISM) |
| Título revista abreviado: | J Magn Magn Mater |
| ISSN: | 03048853 |
| CODEN: | JMMMD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03048853_v258-259_n_p293_Levy |
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Citas:
---------- APA ----------
Levy, P., Parisi, F., Sacanell, J., Granja, L., Quintero, M., Curiale, J., Polla, G.,..., Cheong, S.-W. (2003) . Persistent magnetoresistive memory in phase separated manganites. Second Moscow International Symposium on Magnetism (MISM), 258-259, 293-295.http://dx.doi.org/10.1016/S0304-8853(02)01140-X
---------- CHICAGO ----------
Levy, P., Parisi, F., Sacanell, J., Granja, L., Quintero, M., Curiale, J., et al. "Persistent magnetoresistive memory in phase separated manganites" . Second Moscow International Symposium on Magnetism (MISM) 258-259 (2003) : 293-295.http://dx.doi.org/10.1016/S0304-8853(02)01140-X
---------- MLA ----------
Levy, P., Parisi, F., Sacanell, J., Granja, L., Quintero, M., Curiale, J., et al. "Persistent magnetoresistive memory in phase separated manganites" . Second Moscow International Symposium on Magnetism (MISM), vol. 258-259, 2003, pp. 293-295.http://dx.doi.org/10.1016/S0304-8853(02)01140-X
---------- VANCOUVER ----------
Levy, P., Parisi, F., Sacanell, J., Granja, L., Quintero, M., Curiale, J., et al. Persistent magnetoresistive memory in phase separated manganites. J Magn Magn Mater. 2003;258-259:293-295.http://dx.doi.org/10.1016/S0304-8853(02)01140-X
