Effect of Cu doping on the magnetic and magnetocaloric properties in the HoNiAl intermetallic compound

Magnetic and magnetocaloric properties of spin-glass material DyNi0.67Si1.34

“…However, for HoNi 0.2 Cu 0. Al alloy with the second order transition, the negative slope exists only at 2 K [22] . For better understanding of the magnetic transition in DyNi 0.67 Si 1.34 alloy, Arrott plots ( 2 M vs. M H ) were derived from isothermal magnetization data (inset of Fig.6 (b)).…”

Magnetocaloric effects in RTX intermetallic compounds ( R = Gd–Tm, T = Fe–Cu and Pd, X = Al and Si)

“…For comparison, Figure 29 shows the ∆S M as a function of temperature for HoNi 1−x Cu x Al with x = 0.3 and 0.8 under different magnetic field changes. [82] A small negative value of −∆S M was observed for a low magnetic field change of 1 T in x = 0. [82] Wang et al [83,84] also reported similar work on ErNi 1−x Cu x Al compounds.…”

“…[82] A small negative value of −∆S M was observed for a low magnetic field change of 1 T in x = 0. [82] Wang et al [83,84] also reported similar work on ErNi 1−x Cu x Al compounds. Figure 30 shows the temperature dependence of magnetization for ErNi 1−x Cu x Al compounds with x = 0.2, 0.5, and 0.8, respectively.…”

“…These complex magnetic transitions are induced by the combination and competition between FM and AFM orderings. Increasing Cu x Al compounds under the magnetic field of 0.01 T. [82] content further, the compounds with x = 0.2-0.7 undergo a single AFM-PM transition, and the ones with x = 0.8 ∼ 1 are found to show a FM ground state at low temperatures. For comparison, Figure 29 shows the ∆S M as a function of temperature for HoNi 1−x Cu x Al with x = 0.3 and 0.8 under different magnetic field changes.…”

“…In 2015, Cui et al [82] reported the magnetic properties and MCE in HoNi 1−x Cu x Al compounds. The temperature dependence of magnetization for HoNi 1−x Cu x Al compounds under the magnetic field of 0.01 T is displayed in Fig.…”