Supercooling transition in phase separated manganite thin films: An electrical transport study

Journal Article · Mon May 26 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4880725· OSTI ID:22300280

Singh, Sandeep ^[1]; Kumar, Pawan ^[1]; Siwach, P. K.; Tyagi, Pawan Kumar ^[2]

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1. National Physical Laboratory (Council of Scientific and Industrial Research), Dr. K. S. Krishnan Marg, New Delhi 110012 (India)
2. Department of Applied Physics, Delhi Technological University, Delhi 110042 (India)

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, La{sub 5/8−y}Pr{sub y}Ca{sub 3/8}MnO{sub 3} (y ≈ 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.

• OSTI ID: 22300280
• Journal Information: Applied Physics Letters, Vol. 104, Issue 21; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
CALCIUM COMPOUNDS
ELECTRIC CONDUCTIVITY
FERROMAGNETISM
HYSTERESIS
LANTHANUM COMPOUNDS
MAGNETIC PROPERTIES
MANGANATES
PRASEODYMIUM COMPOUNDS
SUPERCOOLING
SUPERHEATING
THERMODYNAMICS
THIN FILMS
TRANSITION TEMPERATURE