Ginzburg-Landau theory for the magnetic and structural transitions in La 1-y (Ca 1-x Sr x ) y MnO 3
| cnea.tipodocumento | ARTÍCULO CIENTÍFICO | |
| dc.contributor.author | León Hilario, L. M. | |
| dc.contributor.author | Aligia, Armando Ángel | |
| dc.date.accessioned | 2025-12-11T23:32:21Z | |
| dc.date.available | 2025-12-11T23:32:21Z | |
| dc.date.issued | 2019-01 | |
| dc.description.abstract | We present a phenomenological theory for the ferromagnetic transition temperature, the magnetic susceptibility at high temperatures, and the structural distortion in the La 1-y (Ca 1-x Sr x ) y MnO 3 system. We construct a GinzburgLandau free energy that describes the magnetic and the structural transitions, and a competition between them. The parameters of the magnetic part of the free energy are derived from a mean-field solution of the magnetic interaction for arbitrary angular momentum. The theory provides a qualitative description of the observed magnetic and structural phase transitions as functions of Sr-doping level (x) for y = 0.25. | |
| dc.description.institutionalaffiliation | Fil: León Hilario, L. M.. Universidad Nacional de Ingenieria; Perú | |
| dc.description.institutionalaffiliation | Fil: Aligia, Armando Ángel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina | |
| dc.identifier.issn | 0953-8984 | |
| dc.identifier.uri | https://nuclea.cnea.gob.ar/handle/20.500.12553/8628 | |
| dc.publisher | IOP Publishing | |
| dc.relation | info:eu-repo/semantics/reference/hdl/11336/99972 | |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/1361-648X/aaef56 | |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1361-648X/aaef56 | |
| dc.rights.license | info:eu-repo/semantics/restrictedAccess | |
| dc.rights.license | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
| dc.subject | GINZBURG-LANDAU FREE ENERGY | |
| dc.subject | MAGNETISM | |
| dc.subject | PHASE TRANSITIONS | |
| dc.subject | Física de los Materiales Condensados | |
| dc.subject | Ciencias Físicas | |
| dc.subject | CIENCIAS NATURALES Y EXACTAS | |
| dc.title | Ginzburg-Landau theory for the magnetic and structural transitions in La 1-y (Ca 1-x Sr x ) y MnO 3 | |
| dc.type | ARTÍCULO | |
| dc.type.version | Versión publicada |