Magnetocaloric effect in the ferromagnetic GdNi4M (M=Al, Si) and antiferromagnetic NdNiAl4 compounds

Magnetic property and magnetocaloric effect in TmCoAl compound

“…In addition, the permanent magnets in present market can only provide a maximum field of 2T, and this indicates that a large MCE under low magnetic field change is desirable for the fulfillment of a magnetic refrigerator simply using permanent magnets. Therefore, it is desirable to search new magnetocaloric materials exhibiting a large MCE under low field (DH 2T) with a second-order phase transition, such as ErMn 2 Si 2 [15], GdNi 4 M (M ¼ Al, Si) [16], PrMn 1.4 Fe 0.6 Ge 2 [17] and TbCo 3 B 2 [18]. The intermetallic ternary compounds of the RTX 1:1:1 type (R ¼ rare-earth, T ¼ transition metal, X ¼ p-metal) have been devoted much effort to study.…”

Magnetic Properties and Magnetocaloric Effect of DyNi_{4}Si

“…The MCE of DyNi 4 Si exhibits similar characteristic values as the compound GdNi 4 Si [3] and better than the NdNi 4 Si [2].…”

“…The externally applied magnetic elds lead to the quenching and shifting of the peak in the vicinity of T C to higher temperatures, typical of ferromagnets [1]. Recently, we have studied the magnetocaloric eect (MCE) in the NdNi 4 Si [2] and GdNi 4 Si [3] compounds. The present investigations concern MCE in the isostructural DyNi 4 Si.…”

Magnetic order and crystal structure study of YNi4Si-type NdNi4Si

“…The early reports of the magnetic properties and structures of CaCu 5 -type RNi 5 and RNi 4 Si [7][8][9][10][11] and YNi 4 Si-type RNi 4 Si [1,12,13] (R = Gd, Tb, Dy) permit us to draw the following preliminary conclusions. In the case of {Tb, Dy}Ni 4 Si the ferromagnetic ordering temperature increases from the CaCu 5 -type RNi 5 across CaCu 5 -type RNi 4 Si to YNi 4 Si-type RNi 4 Si, whereas the Curie point decreases from GdNi 5 to the CaCu 5 -type GdNi 4 Si and the Curie temperatures of CaCu 5 -type and YNi 4 Si-type GdNi 4 Si are the same.…”