We show that temperature of a current carrying manganite in presence of a magnetic field decreases abruptly as much as (7 K) accompanied by a steplike decrease in magnetoresistance at a critical value of when the base temperature is 40 K (100 K). The magnitude of and the position of magnetoresistance step decrease toward lower with decreasing amplitude of the current. We discuss possible origins of the current and magnetic-field driven temperature change which may find applications in magnetothermal refrigeration besides magnetocaloric effect.
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.© 2009 American Institute of Physics.
2009
American Institute of Physics
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