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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
S. Guha, S. Datta, S. K. Panda, M. Kar 
Corresponding Authors:
M. Kar 
DOI #:
https://doi.org/10.1016/j.jallcom.2020.156033 
Title:
Room temperature magneto-caloric effect and electron transport properties study on Ni2.14Mn0.55Sb1.31 alloy 
Journal:
Journal of Alloys and Compounds 
Year:
2020 
Volume:
843 
Page:
156033 
Keywords:
Magnon-magnon scattering, Arrott plot, Magnetocaloric effect, Relative cooling power 
Abstract:
Ni2.14Mnd0.55Sb1.3Heusler alloy has been prepared by the conventional arc melting method withvacuum-sealed annealing. The sample has been crystallized toFm3mspace group inL21phase, and it isthe parent crystal structure of the Ni-based Full Heusler alloy. It has been found that the sample has theCurie temperature (para to ferromagnetic transition temperature) at 290K. It was determined frommagnetization ~ temperature plot (M ~ T) as well as by employing the Arrott plot method. Also, criticalexponent analysis by employing the Arrott plot and Kouvel-Fisher methods confirm that the sample(Ni2.14Mn0.55Sb1.31) obeys meanfield theory with long range spin ordering. Analysis of temperaturedependent resistivity data interestingly reveals the phonon-phonon and magnon-manon scatteringdominance above and below the Curie temperature, respectively. The electrical and magnetic propertiesinvestigation endorse that there is a correlation between magnetic and electrical properties of the abovesample. The magnetocaloric effect (MCE) analysis is carried out by using the Maxwell’s equations inisothermal magnetization data. It is interesting to note that the sample exhibits maximum MCE near theroom temperature (~290K), i.e., the magnetic Curie temperature. Hence the present alloy may be apotential material to be used for magnetic refrigeration application. 
Entered by:
Venkata Dantham on 2020-08-02 
 
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