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Temperature dependence of the magnetic properties in LaMnO_(3+δ)

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Romero, J.J. y Cuadrado, R. y Arroyo, A. y García, M. A. y Hernando Grande, Antonio y Cortés Gil, R y González Calbet, J. M. y Vallet Regí, V. (2006) Temperature dependence of the magnetic properties in LaMnO_(3+δ). Journal of applied physics, 99 (8). ISSN 0021-8979

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URL Oficial: http://dx.doi.org/10.1063/1.2150388


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Resumen

Data are presented on the thermal dependence of the hysteretic properties of cationic vacancies including manganite samples of composition LaMnO_(3+δ)(δ=0.05 and 0.12). Our results evidence the presence in both samples of two magnetic phases having ferro- and antiferromagnetic orders, respectively. The temperature dependence of the coercivity and relaxational properties of the samples is closely linked to the connectivity of the magnetic moment bearing Mn^(3+)-Mn^(4+) ferromagnetic clusters that demagnetize independently in the case of the δ=0.05 sample and collectively in that of the δ=0.12 one, as evidenced from the activation volume results (delta=0.05) which yielded a size of the same order magnitude as that obtained in previous works for the Mn^(3+)-Mn^(4+) ferromagnetic cluster size.


Tipo de documento:Artículo
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© 2006 American Institute of Physics.
One of the authors J.J.R. acknowledges Ministerio de Educación y Ciencia of Spain for his “Juan de la Cierva” contract.

Palabras clave:Physics; Applied
Materias:Ciencias > Física > Física de materiales
Ciencias > Física > Física del estado sólido
Código ID:44129
Depositado:29 Aug 2017 15:58
Última Modificación:29 Aug 2017 15:58

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