Gd25RE25Co25Al25 (RE = Tb, Dy and Ho) high-entropy glassy alloys with distinct spin-glass behavior and good magnetocaloric effect

Magnetocaloric effect and microstructure of amorphous/nanocrystalline HoErFe melt-extracted microwires

“…3a. Due to the magnetization reversal caused by the residual magnetic field in the sample chamber [17], the initial value of the ZFC curve is negative, which could be observed in Fig. 3a.…”

“…Due to the transition group elements being doped into the large atomic magnetic moment of REEs that possess better glass forming ability (GFA), the material exhibits a varied electronic and magnetic structure, which leads to good thermal stability and magnetocaloric properties [17].…”

High entropy induced structural stabilization, anisotropy transition and magnetization enhancement effect in La2Co17

“…11 The ultrafine-grained FeCoNiCu 0.2 Si 0.2 HEA exhibits good mechanical properties with a yield strength of 820 MPa and a fracture strength of 1100 MPa, and good ferromagnetic characteristics with a saturation magnetic moment M s of 133 emu g −1 (4.57 μ B ) and a Curie temperature T c of 887 K. 12 The Gd 25 RE 25 Co 25 Al 25 (RE = Tb, Dy, and Ho) HEA shows a large magnetocaloric effect, which has potential application as a magnetic refrigerant. 13…”

“…11 The ultrafinegrained FeCoNiCu 0.2 Si 0.2 HEA exhibits good mechanical properties with a yield strength of 820 MPa and a fracture strength of 1100 MPa, and good ferromagnetic characteristics with a saturation magnetic moment M s of 133 emu g À1 (4.57 m B ) and a Curie temperature T c of 887 K. 12 The Gd 25 RE 25 Co 25 Al 25 (RE = Tb, Dy, and Ho) HEA shows a large magnetocaloric effect, which has potential application as a magnetic refrigerant. 13 Recently, the concept of high entropy was also introduced into the research field of intermetallic compounds. 14 A high-entropy intermetallic compound (HEIC) is defined as one or more crystal positions occupied in a disordered fashion by multiple atoms with an equimolar ratio in one unit cell.…”

Enhancing the magnetocaloric response of high-entropy metallic-glass by microstructural control

“…In particular, for MCE research field, evolving to non-equiatomic compositions enables rare-earth (RE)-containing HEAs to surpass their low temperature limit [20,21], and to exhibit large MCE enhancement in transition-metal HEAs due to the firstorder magnetostructural phase transitions [22,23]. Above all, RE-containing HEAs, especially Gd-containing high-entropy metallic glasses (HE-MGs), have received the most attention due to their excellent MCE properties [24][25][26][27][28][29]. However, their Curie temperatures (T C ) are typically below 60 K, which further indicates that their working temperature is limited to that range as their MCE peaks around T C .…”