Large magnetic entropy change in La{sub 0.75}Ca{sub 0.25}MnO{sub 3}

Journal Article · Sat Feb 01 00:00:00 EST 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.118309· OSTI ID:467151

Guo, Z B; Zhang, J R; Huang, H; Ding, W P; Du, Y W ^[1]

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1. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, Peoples Republic of (China)

Magnetic entropy change of La{sub 0.75}Ca{sub 0.25}MnO{sub 3} with different particle size has been investigated. Magnetic entropy change {approximately}4.7 J/kgK larger than that of Gd has been observed at 224 K under a magnetic field of 1.5 T in comparatively big particles. This phenomenon of large magnetic entropy change indicates that the perovskite-type manganese oxides have potential applications for magnetic refrigerants in high temperature.{copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 467151
• Journal Information: Applied Physics Letters, Vol. 70, Issue 7; Other Information: PBD: Feb 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LANTHANUM OXIDES
MAGNETIC PROPERTIES
CALCIUM OXIDES
MANGANESE OXIDES
REFRIGERATION
ENTROPY
PEROVSKITES
MAGNETIC REFRIGERATORS
MAGNETIZATION
TEMPERATURE DEPENDENCE
GRAIN SIZE