Abstract
Nearly half of lanthanum sites in lanthanum manganites were substituted with monovalent ion-sodium and the compound possessed distorted orthorhombic structure. Ferromagnetic ordering at 300 K and the magnetic isotherms at different temperature ranges were analyzed for estimating magnetic entropy variation. Magnetic entropy change of 1.5 J·kg-1·K -1 was observed near 300 K. An appreciable magnetocaloric effect was also observed for a wide range of temperatures near 300 K for small magnetic field variation. Heat capacity was measured for temperatures lower than 300 K and the adiabatic temperature change increases with increase in temperature with a maximum of 0.62 K at 280 K.
Original language | English |
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Article number | 092407 |
Journal | Applied Physics Letters |
Volume | 104 |
Issue number | 9 |
DOIs | |
Publication status | Published - Mar 3 2014 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)