Near fifty percent sodium substituted lanthanum manganites - A potential magnetic refrigerant for room temperature applications

N. Sethulakshmi, I. A. Al-Omari, K. G. Suresh, M. R. Anantharaman

Research output: Contribution to journalArticle

8 Citations (Scopus)

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 languageEnglish
Article number092407
JournalApplied Physics Letters
Volume104
Issue number9
DOIs
Publication statusPublished - 2014

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refrigerants
lanthanum
sodium
room temperature
sodium compounds
entropy
temperature
isotherms
estimating
specific heat
magnetic fields
ions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Near fifty percent sodium substituted lanthanum manganites - A potential magnetic refrigerant for room temperature applications. / Sethulakshmi, N.; Al-Omari, I. A.; Suresh, K. G.; Anantharaman, M. R.

In: Applied Physics Letters, Vol. 104, No. 9, 092407, 2014.

Research output: Contribution to journalArticle

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