TY - JOUR
T1 - Overview of magnetoelastic coupling in (Mn, Fe)2(P, Si)-type magnetocaloric materials
AU - Miao, Xue Fei
AU - Hu, Shu Yuan
AU - Xu, Feng
AU - Brück, Ekkes
PY - 2018
Y1 - 2018
N2 - (MnFe)2(P, Si)-type compounds are, to date, one of the best candidates for magnetic refrigeration and energy conversion applications due to the combination of giant magnetocaloric effect (MCE), tunable working temperature range and low material cost. The giant MCE in the (Mn, Fe)2(P, Si)-type compounds originates from strong magnetoelastic coupling, where the lattice degrees of freedom and spin degrees of freedom are efficiently coupled. The tunability of the phase transition, in terms of the critical temperature and the character of the phase transition, is essentially attributed to the changes in the magnetoelastic coupling in the (Mn, Fe)2(P, Si)-type compounds. In this review, not only the fundamentals of the magnetoelastic coupling but also the related practical aspects such as magnetocaloric performance, hysteresis issue and mechanical stability are discussed for the (Mn, Fe)2(P, Si)-type compounds. Additionally, some future fundamental studies on the MCE as well as possible ways of solving the hysteresis and fracture issues are proposed.
AB - (MnFe)2(P, Si)-type compounds are, to date, one of the best candidates for magnetic refrigeration and energy conversion applications due to the combination of giant magnetocaloric effect (MCE), tunable working temperature range and low material cost. The giant MCE in the (Mn, Fe)2(P, Si)-type compounds originates from strong magnetoelastic coupling, where the lattice degrees of freedom and spin degrees of freedom are efficiently coupled. The tunability of the phase transition, in terms of the critical temperature and the character of the phase transition, is essentially attributed to the changes in the magnetoelastic coupling in the (Mn, Fe)2(P, Si)-type compounds. In this review, not only the fundamentals of the magnetoelastic coupling but also the related practical aspects such as magnetocaloric performance, hysteresis issue and mechanical stability are discussed for the (Mn, Fe)2(P, Si)-type compounds. Additionally, some future fundamental studies on the MCE as well as possible ways of solving the hysteresis and fracture issues are proposed.
KW - (Mn, Fe)(P, Si)
KW - Hysteresis
KW - Magnetocaloric effect
KW - Magnetoelastic coupling
KW - Mechanical stability
UR - http://www.scopus.com/inward/record.url?scp=85049605762&partnerID=8YFLogxK
U2 - 10.1007/s12598-018-1090-2
DO - 10.1007/s12598-018-1090-2
M3 - Article
AN - SCOPUS:85049605762
SN - 1001-0521
SP - 14733
EP - 14743
JO - Rare Metals
JF - Rare Metals
ER -