Singh, Sandeep and Kumar, Pawan and Siwach, P. K. and Tyagi, Pawan Kumar and Singh, H. K.
(2014)
Supercooling transition in phase separated manganite thin films: An electrical transport study.
Applied Physics Letters, 104 (21).
ISSN 0003-6951
Abstract
The impact of variation in the relative fractions of the ferromagnetic metallic and antiferromagnetic/charge ordered insulator phases on the supercooling/superheating transition in strongly phase separated system, La5/8-yPryCa3/8MnO3 (y approximate to 0.4), has been studied employing magnetotransport measurements. Our study clearly shows that the supercooling transition temperature is non-unique and strongly depends on the magneto-thermodynamic path through which the low temperature state is accessed. In contrast, the superheating transition temperature remains constant. The thermo-magnetic hysteresis, the separation of the two transitions and the associated resistivity, all are functions of the relative fraction of the coexisting phases.
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