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Structure, magnetic properties and magnetocaloric effect in LaMnSbO 0.8 F 0.2 oxypnictide material
Author(s) -
Kanagaraj M.,
Thakur Gohil S.,
Prakash J.,
Muthu S. Esakki,
Arumugam S.,
Ganguli Ashok K.
Publication year - 2015
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201451390
Subject(s) - magnetic refrigeration , magnetic field , condensed matter physics , materials science , entropy (arrow of time) , thermodynamics , magnetization , physics , quantum mechanics
We have investigated the structural, magnetic properties and magnetocaloric effect (MCE) in LaMnSbO 0.8 F 0.2 . The compound has the ZrCuSiAs‐type structure with P4/nmm space group. For a field change of 0–5 T, the maximum entropy change (–Δ S M ) is calculated to be 0.074 J kg −1 K by using the Maxwell's relations from the magnetic isotherms. The relative cooling power was increasing from 0.67 to 3.74 J kg −1 with the increases of magnetic field changes from 0–1 to 0–5 T. The observed reversible MCE is related to a second‐order magnetic phase transition.