Giant magnetocaloric effects by tailoring the phase transitions | Zendy

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

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Giant magnetocaloric effects by tailoring the phase transitions

Author(s) -

N. T. Trung,

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 - 10.1063/1.3399773

Subject(s) - magnetic refrigeration , orthorhombic crystal system , materials science , ferromagnetism , condensed matter physics , phase transition , phase (matter) , magnetic shape memory alloy , alloy , magnetic alloy , refrigerant , crystallography , magnetization , magnetic domain , thermodynamics , crystal structure , magnetic field , chemistry , metallurgy , physics , gas compressor , organic chemistry , quantum mechanics

The MnCoGe alloy can crystallize in either the hexagonal Ni2In- or the orthorhombic TiNiSi-type of structure. In both phases MnCoGe behaves like a typical ferromagnet with a second-order magnetic phase transition. For MnCoGeBx with B on interstitial positions, we discover a giant magnetocaloric effect associated with a single first-order magnetostructural phase transition, which can be achieved by tuning the magnetic and structural transitions to coincide. The results obtained on the MnCoGe-type alloys may be extensible to other types of magnetic materials undergoing a first-order structural transformation and can open up some possibilities for searching magnetic refrigerants for room-temperature application

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