Selection of magnetic materials for an active magnetic regenerative refrigerator

Tunable Curie temperatures in Gd alloyed Fe–B–Cr magnetocaloric materials

“…The search for new magnetocaloric materials (MCM) is attracting considerable attention recently, since their practical applications are in the energy efficient environmentally friendly magnetic refrigeration technologies [1][2][3][4][5][6][7][8][9][10][11][12]. This technology exploits the magnetocaloric effect (MCE), which corresponds to the temperature change of a magnetic material when adiabatically subjected to a varying magnetic field.…”

Optimization of the refrigerant capacity in multiphase magnetocaloric materials

“…15,16 All of these methods involve either the existence of a Curie temperature distribution in the magnetic material, or the presence of several phases that contribute to the total ⌬S M .…”

A constant magnetocaloric response in FeMoCuB amorphous alloys with different Fe∕B ratios

“…Moreover, composites with a constant entropy change between the hot and cold reservoirs have been considered among the optimum materials for active magnetic regenerative refrigerators. 21,22 Hence, materials with a constant value of ͉⌬S M pk ͉ and different Curie temperatures could be a good starting point for the development of such composites. One of the objectives of this work is to show that the B substitution for Fe in nanoperm type alloys with low B content permits one to adjust the temperature at which MCE has a maximum response, keeping constant the peak entropy change of the alloys.…”