Multiple metamagnetic transitions in the magnetic refrigerant La(Fe,Si)13Hx.
The effect of hydrostatic pressure on thermally and field-induced first-order magnetic phase transitions is studied in the La(Fe,Si)_(13)-type compounds. A peculiar series of consecutive field-induced transitions is realized using a distinct combination of hydrostatic pressure and negative pressure created by the interstitial insertion of hydrogen. The pressure-induced discontinuous magnetization jumps result in an enhanced cooling power, thus opening up the possibility to exploit in full the magnetocaloric potential of this compound class.
Lyubina
Julia
J
IFW Dresden, Institute for Metallic Materials, Dresden, Germany. j.lyubina@ifw-dresden.de
Nenkov
Konstantin
K
Schultz
Ludwig
L
Gutfleisch
Oliver
O