A novel Ho36Dy20Al24Co20 bulk metallic glass with large magnetocaloric effect

Structure and magnetic entropy change of suck-cast Gd60Co26Al6Ge8 alloy

“…It can be seen from Fig. 6 that the maximum of ÀDS max under 0-5 T is 7.6 Jkg À1 K À1 occurring at 155 K. This value is comparable with that of Gd and the previous rare earth-based BMGs [7][8][9][10][11][12]. The relative cooling power (RCP) is an important parameter for evaluating magnetic refrigerants.…”

“…Very recently, the bulk metallic glasses (BMGs), such as Gd 33 Er 22 Al 25 Co 20 [7], Er 50 Al 24 Co 20 Y 6 [8], Dy 50 Gd 7 Al 23 Co 20 [8], Gd 55 Co 20 Fe 5 Al 20 [9], Gd 36 Y 20 Al 24 Co 20 [10], and Ho 36 Dy 20 Al 24 Co 20 [11], have been considered as potential candidates for active magnetic regenerators in magnetic refrigeration systems because they exhibit considerable MCE. Moreover, they have several intrinsic natures, such as the higher electrical resistivity and thus the smaller eddy current heating, high corrosion resistance, outstanding mechanical properties, and high thermal stability, and manifest their promising application as candidates for magnetic refrigerants.…”

Ni–Gd–Al metallic glasses with large magnetocaloric effect

“…According to this point of view, this kind of glassy alloys should have large MCE, which is verified by the experimental results described in the following sections. [17], Dy 50 Gd 6 Al 23 Co 20 [19], and Ho 34 Dy 22 Al 24 Co 20 [20], and much larger than that of Pd 40 Ni 22.5 Fe 17.5 P 20 [32]. As for refrigeration application, the refrigerant capacity (RC) is also important parameter to evaluate the integrated property of MCE substances.…”

“…Recently, progress has been achieved in the MCE of metallic glasses based on heavy rare-earth elements. Ternary or quaternary Gd-[11e17], Dy- [18,19], Ho- [19,20], and Er-based [19,21] metallic glasses have been found to possess large magnetic entropy changes comparable to or even larger than that of well-known crystalline magnetic refrigerant in a certain temperatures range. For example, the maximum magnetic entropy change of 15.78 J kg À1 K À1 was measured in Gd 40 Dy 16 Al 24 Co 20 under a field change of 5 T [13], which is close to the values of Gd 5 (Ge 1Àx Si x ) 4 (0.3…”

Gd–Dy–Al–Co bulk metallic glasses with large magnetic entropy change and refrigeration capacity

“…moments and intricate spin structure. Erenow, heavy rare earth (HRE) Gd-based [8][9][10][11], Ho-based [12], Dy-based [13], and Er-based [14,15] BMGs have been measured to have large MCE, indicating their promising future as candidate for magnetic refrigeration.…”