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Title: Magnetocaloric effect in layered NdMn2Ge0.4Si1.6
Authors: Wang, JL
Campbell, SJ
Cadogan, JM
Studer, AJ
Zeng, R
Dou, SX
Keywords: Antiferromagnetism
Issue Date: 6-Jun-2011
Publisher: American Institute of Physics
Citation: Wang, J.L., Campbell, S.J., Cadogan, J.M., Studer, A.J., Zeng, R., & Dou, S.X. (2011). Magnetocaloric effect in layered NdMn2Ge0.4Si1.6. Applied Physics Letters, 98(23), Art. No. 232509. doi:10.1063/1.3599456
Abstract: A giant magnetocaloric effect has been observed in NdMn2Ge0.4Si1.6 associated with the first-order magnetic phase transition from antiferromagnetism to ferromagnetism around T-C=36 K. The magnetic entropy change -Delta S-M and adiabatic temperature change Delta T-ad have been determined from magnetization and specific heat measurements (B=0-5 T) with -Delta S-M calculated by the Maxwell relation and Clausius-Clapeyron method. The values -Delta S-M(max) = 12.3 J kg(-1) K-1 and refrigerant capacity similar to 95 J/kg for Delta B=0-2 T as derived from the Maxwell relation, together with the small hysteresis (thermal < 0.5 K; magnetic field < 0.1 T), indicate the potential of NdMn2Ge0.4Si1.6 for refrigeration applications. (c) 2011 American Institute of Physics.
Gov't Doc #: 3829
ISSN: 0003-6951
Appears in Collections:Journal Articles

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