Conferencia
Abstract:
It was already shown that a qualitative understanding of the pressure effects on the ferromagnetic transition temperature (Tc) of the perovskite manganites (AMnO3) results from the variation of the geometric factors that control the bandwidth, the Mn-O-Mn bond angle and the Mn-O bond length and also from the reduction of the effective mass related to the polaronic nature of the carriers. But, up to now, a quantitative agreement was not really obtained, particularly for the hole-doped manganites. Here, we present results on the pressure effects in the Tc of La 0.8(Ca,Sr)0.2MnO3 ceramic samples. Our results are described within a phenomenological approach based on the well known dependence of Tc on the mean A ionic radius, that gives a good quantitative agreement of the pressure sensitivity of Tc for several hole-doped manganites. © 2006 American Institute of Physics.
Registro:
| Documento: | Conferencia |
| Título: | Pressure sensitivity of the ferromagnetic transition in perovskite manganites revisited |
| Autor: | Garbarino, G.; Acha, C.; Polla, G.; Leyva, A.G. |
| Ciudad: | Orlando, FL |
| Filiación: | Laboratorio de Bajas Temperaturas, Depto. de Física, Ciudad Universitaria, 1428 Buenos Aires, Argentina Departamento de Física, Comisión Nacional de Energía Atómica, Gral Paz 1499, 1650 San Martin, Buenos Aires, Argentina |
| Palabras clave: | Manganites; Pressure effects |
| Año: | 2006 |
| Volumen: | 850 |
| Página de inicio: | 1187 |
| Página de fin: | 1188 |
| DOI: | http://dx.doi.org/10.1063/1.2355128 |
| Título revista: | LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 |
| Título revista abreviado: | AIP Conf. Proc. |
| ISSN: | 0094243X |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v850_n_p1187_Garbarino |
Referencias:
- Zener, C., (1951) Phys. Rev, 82, p. 403
- Jaime, M., Hardner, H.T., Salomon, M.B., Rubinstein, M., Dorsey, P., Emin, D., (1997) Phys. Rev. Lett, 78, p. 951
- Laukhin, V., Fontcuberta, J., Garcia-Muñoz, J.L., Obradors, X., (1997) Phys. Rev. B, 56, pp. R10009
- Polla, G., Leyva, A.G., private communication; Shannon, R.D., (1976) Acta Cryst. A, 32, p. 751
- Hwang, H.Y., Palstra, T.T.M., Cheong, S.-W., Batlogg, B., (1995) Phys. Rev. B, 52, p. 15046
- Fontcuberta, J., Laukhin, V., Obradors, X., (1998) Appl. Phys. Lett, 72, p. 2607
- Ulyanov, A.N., Maksimov, I.S., Nyeanchi, E.B., Medvedev, Y.V., Yu, S.C., Starostyuk, N.Y., Sundqvist, B., (2002) J. Appl. Phys, 91, p. 7739
- Fujishiro, H., Ikebe, M., Kikuchi, T., Ozawa, H., (2000) Physica B, 281-282, p. 491
- Moritomo, Y., Asamitsu, A., Tokura, Y., (1995) Phys. Rev. B, 51, p. 16491
- Congeduti, A., Postorino, P., Dore, P., Nucara, A., Lupi, S., Mercone, S., Calvani, P., Sarma, D.D., (2001) Phys. Rev. B, 63, p. 184410
Citas:
---------- APA ----------
Garbarino, G., Acha, C., Polla, G. & Leyva, A.G. (2006) . Pressure sensitivity of the ferromagnetic transition in perovskite manganites revisited. LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, 850, 1187-1188.http://dx.doi.org/10.1063/1.2355128
---------- CHICAGO ----------
Garbarino, G., Acha, C., Polla, G., Leyva, A.G. "Pressure sensitivity of the ferromagnetic transition in perovskite manganites revisited" . LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 850 (2006) : 1187-1188.http://dx.doi.org/10.1063/1.2355128
---------- MLA ----------
Garbarino, G., Acha, C., Polla, G., Leyva, A.G. "Pressure sensitivity of the ferromagnetic transition in perovskite manganites revisited" . LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, vol. 850, 2006, pp. 1187-1188.http://dx.doi.org/10.1063/1.2355128
---------- VANCOUVER ----------
Garbarino, G., Acha, C., Polla, G., Leyva, A.G. Pressure sensitivity of the ferromagnetic transition in perovskite manganites revisited. AIP Conf. Proc. 2006;850:1187-1188.http://dx.doi.org/10.1063/1.2355128
