Effects of hydrostatic pressure on magnetostructural transitions and magnetocaloric properties in (MnNiSi)1−x(FeCoGe)x

Abstract

Magnetostructural transition and magnetocaloric effect in MnNiGe1.05 melt-spun ribbons J. Appl. Phys. 115, 17A920 (2014); 10.1063/1.4864435 Effect of substitution of In for Co on magnetostructural coupling and magnetocaloric effect in MnCo1-xInxGe compoundsThe isostructural alloying of two compounds with different magnetic and thermo-structural properties has resulted in a new system, (MnNiSi) 1Àx (FeCoGe) x , that exhibits large magnetocaloric effects with acute sensitivity to both compositional variation and applied hydrostatic pressure. The maximum isothermal entropy change reaches a value of ÀDS max ¼ 143.7 J/kg K for a field change of DB ¼ 5 T at atmospheric pressure. The first-order magnetostructural transition responsible for the entropy change shifts to lower temperature with applied hydrostatic pressure ($À10 K/kbar) but maintains a large value of ÀDS max . V C 2015 AIP Publishing LLC.

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