| Summary: | In the present work, Fe<sub>88</sub>Zr<sub>4</sub>Pr<sub>3</sub>B<sub>4</sub>Ce<sub>1</sub> metallic glass (MG) was successfully prepared by minor Ce substitution for Pr, and compared with Fe<sub>88</sub>Zr<sub>4</sub>Pr<sub>4</sub>B<sub>4</sub> MG in terms of glass forming ability (GFA), magnetic and magnetocaloric properties. The GFA, <i>T<sub>c</sub></i> and the maximum magnetic entropy change (−Δ<i>S<sub>m</sub><sup>peak</sup></i>) of the Fe<sub>88</sub>Zr<sub>4</sub>Pr<sub>3</sub>B<sub>4</sub>Ce<sub>1</sub> MG were found to decrease slightly. At the same time, the possible interaction mechanism of minor Ce replacing Pr was also explained. The critical exponents (<i>β</i>, <i>γ</i> and n) obtained by the Kouvel–Fisher method indicate that Fe<sub>88</sub>Zr<sub>4</sub>Pr<sub>3</sub>B<sub>4</sub>Ce<sub>1</sub> MG near <i>T<sub>c</sub></i> exhibits typical magnetocaloric behavior of fully amorphous alloys. The considerable maximum magnetic entropy change (−Δ<i>S<sub>m</sub><sup>peak</sup></i> = 3.84 J/(kg × K) under 5 T) near its Curie temperature (<i>T<sub>c</sub></i> = 314 K) as well as RCP (~ 646.3 J/kg under 5 T) make the Fe<sub>88</sub>Zr<sub>4</sub>Pr<sub>3</sub>B<sub>4</sub>Ce<sub>1</sub> MG a better candidate as a component of the amorphous hybrids that exhibit table-shape magnetic entropy change profiles within the operation temperature interval of a magnetic refrigerator.
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