Artículo
Abstract:
We have measured the pressure sensitivity of magnetic properties on La5 / 8 - y Pry Ca3 / 8 MnO3 (y = 0.3) nanostructured powders. Samples were synthesized following a microwave assisted denitration process and a final heat treatment at different temperatures to control the grain size of the samples. A span in grain diameters from 40 nm to ∼ 1000 nm was obtained. Magnetization curves as a function of temperature were measured following different thermomagnetic histories. AC susceptibility as a function of temperature was also measured at different hydrostatic pressures (up to 10 kbar) and for different frequencies. Our results indicate that the nanostructuration plays a role of an internal pressure, producing a structural deformation with similar effects to those obtained under an external hydrostatic pressure. © 2007 Elsevier B.V. All rights reserved.
Registro:
| Documento: | Artículo |
| Título: | Pressure effects on nanostructured manganites |
| Autor: | Acha, C.; Garbarino, G.; Leyva, A.G. |
| Filiación: | Laboratorio de Bajas Temperaturas, Departamento de Física, FCEyN, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina Departamento de Física, CAC, Comisión Nacional de Energía Atómica, Gral Paz 1499, 1650 San Martín, Buenos Aires, Argentina |
| Palabras clave: | Magnetic properties; Manganites; Nanoparticles; Pressure effects; Hydrostatic pressures; Microwave assisted denitration; Nanostructuration; Pressure sensitivity; Thermomagnetics; Deformation; Denitrification; Grain size and shape; Heat treatment; Hydrostatic pressing; Magnetic properties; Magnetization; Nanostructured materials; Pressure effects; Manganites |
| Año: | 2007 |
| Volumen: | 398 |
| Número: | 2 |
| Página de inicio: | 212 |
| Página de fin: | 214 |
| DOI: | http://dx.doi.org/10.1016/j.physb.2007.04.069 |
| Título revista: | Physica B: Condensed Matter |
| Título revista abreviado: | Phys B Condens Matter |
| ISSN: | 09214526 |
| CODEN: | PHYBE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214526_v398_n2_p212_Acha |
Referencias:
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Citas:
---------- APA ----------
Acha, C., Garbarino, G. & Leyva, A.G. (2007) . Pressure effects on nanostructured manganites. Physica B: Condensed Matter, 398(2), 212-214.http://dx.doi.org/10.1016/j.physb.2007.04.069
---------- CHICAGO ----------
Acha, C., Garbarino, G., Leyva, A.G. "Pressure effects on nanostructured manganites" . Physica B: Condensed Matter 398, no. 2 (2007) : 212-214.http://dx.doi.org/10.1016/j.physb.2007.04.069
---------- MLA ----------
Acha, C., Garbarino, G., Leyva, A.G. "Pressure effects on nanostructured manganites" . Physica B: Condensed Matter, vol. 398, no. 2, 2007, pp. 212-214.http://dx.doi.org/10.1016/j.physb.2007.04.069
---------- VANCOUVER ----------
Acha, C., Garbarino, G., Leyva, A.G. Pressure effects on nanostructured manganites. Phys B Condens Matter. 2007;398(2):212-214.http://dx.doi.org/10.1016/j.physb.2007.04.069
