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

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.
Authors:
 [1] ;  [2] ;  [1] ;  [2] ; ;  [1] ;  [3]
  1. National Physical Laboratory (Council of Scientific and Industrial Research), Dr. K. S. Krishnan Marg, New Delhi 110012 (India)
  2. (India)
  3. Department of Applied Physics, Delhi Technological University, Delhi 110042 (India)
Publication Date:
OSTI Identifier:
22300280
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 21; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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