From single- to double-first-order magnetic phase transition in magnetocaloric Mn1−xCrxCoGe compounds | Zendy

N. T. Trung | Zendy; V. Biharie | Zendy; L. Zhang | Zendy; L. Caron | Zendy; K.H.J. Buschow | Zendy; E. Brück | Zendy

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From single- to double-first-order magnetic phase transition in magnetocaloric Mn1−xCrxCoGe compounds

Author(s) -

N. T. Trung,

V. Biharie,

L. Zhang,

L. Caron,

K.H.J. Buschow,

E. Brück

Publication year - 2010

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3399774

Subject(s) - magnetic refrigeration , antiferromagnetism , ferromagnetism , condensed matter physics , paramagnetism , materials science , magnetic shape memory alloy , phase transition , alloy , first order , magnetization , magnetic domain , magnetic field , metallurgy , physics , mathematics , quantum mechanics

Substitution of some Cr for Mn atoms in MnCoGe was employed to control the magnetic and structural transitions in this alloy to coincide, leading to a single first-order magnetostructural transition from the ferromagnetic to the paramagnetic state with a giant magnetocaloric effect observed near room temperature. Further increase in the Cr content in the Mn1?xCrxCoGe alloys can induce another first-order magnetoelastic transition from the antiferromagnetic to the ferromagnetic state occurring at lower temperature. The giant magnetocaloric effect as well as the simultaneous tunability of the two magnetic transitions make these materials promising for future cooling applications.RRR/Radiation, Radionuclides and ReactorsApplied Science

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