Glass formation ability, structure and magnetocaloric effect of a heavy rare-earth bulk metallic glassy Gd55Co20Fe5Al20 alloy

An Er-based bulk metallic glass with high thermal stability and excellent magnetocaloric properties

“…5. It is known that the maximum values of DS M for the BMG alloy are 2.50 J kg À1 K À1 at 1 T, 3.68 J kg À1 K À1 at 1.5 T and 4.66 J kg À1 K À1 at 2 T. These values are much larger than those of Gd 53 Al 24 Co 20 Zr 3 , Gd 33 Er 22 Al 25 Co 20 (w4 J kg À1 K À1 at 2 T) [14] and Gd 55 Co 20 Fe 5 Al 20 (2.24 J kg À1 K À1 at 2 T) [15] BMG alloys. Compared with those of the magnetocaloric compounds used in the similar temperature range under the same field, these values are comparable with or even higher than those of previously published results [25e27].…”

“…The large magnetic moment and profuse magnetic structure of these BMG alloys imply good magnetocaloric properties. Thus an interest in MCE of BMGs, such as GdeYeAleCo [13], GdeAleCoeZr, GdeEreAleCo [14], GdeCoeFeeAl [15], PdeNieFeeP [16], etc., has essentially arisen for its possible practical application in magnetic refrigerators.…”

Crystallization behavior of Ce70−xAl10Cu20Cox (x=0, 1, 3, 5 at.%) amorphous alloys

“…Up to date, rare earth based metallic glasses have attracted increasing interest due to their unique properties and potential applications as functional glassy materials [9][10][11][12][13][14][15][16]. Much attention has been paid to a Ce-Al-Cu system which can form bulk metallic glasses (BMGs) and has high GFA and attractive features [16][17][18][19].…”

Magnetic properties and large magnetocaloric effects in amorphous Gd-Al-Fe alloys for magnetic refrigeration

“…On the other hand, heavy rare earth-transition metal (RE-M) compounds are considered the best-suited materials for achieving large MCE due to their large magnetic moments. Hence, there are many reports on the discovery of melt-spun intermetallic RE-M ribbons, such as Gd-Dy-Al-Co [3], Gd-Al [4], Gd-Fe-Al [5], Gd 55 Co 20 Fe 5 Al 20 [6], etc. These materials showed a relatively significant magnetocaloric effect and large magnetic entropy change near their T c .…”