UE-INN 27105
UNIDAD EJECUTORA INSTITUTO DE NANOCIENCIA Y NANOTECNOLOGIA
Unidad Ejecutora - UE
artículos
Título:
Thermal cycling memory in phase separated manganites
Autor/es:
MARIANO QUINTERO; JOAQUIN SACANELL; BERNARDO SIEVERS
Revista:
Materials today: Proceedings
Editorial:
Elsevier
Referencias:
Año: 2019 vol. 14 p. 84 - 87
ISSN:
2214-7853
Resumen:
We have studiedthe irreversibility of the magnetization induced by thermal cycles in La0.5Ca0.5MnO3manganites, which present a low temperature state characterized by the coexistenceof phases. The effect is evidenced by a decrease of the magnetization aftercycling the sample between 300 and 50 K. We developed a phenomenological modelthat allows us to correlate the value of the magnetization with the number ofcycles performed. The experimental results show excellent agreement with ourmodel, suggesting that this material could be used for the development of adevice to monitor thermal changes. The effect of thermal cycling is towards anincrease of the amount of the non ferromagnetic phase in the compounds and it mightbe directly related with the strain at the contact surface among the coexistingphases.
