Effects of Co and Si co-doping on magnetostructural transformation and magnetocaloric effect in Ni-Mn-Sn based alloys
Effects of Co and Si co-doping on magnetostructural transformation and magnetocaloric effect in Ni-Mn-Sn based alloys
复制标题
Co、Si共掺杂对Ni-Mn-Sn基合金磁结构转变和磁热效应的影响
DOI：
10.1016/j.jallcom.2021.162190
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发表时间：
2022-02
影响因子：
6.2
通讯作者：
Liang Zuo
中科院分区：
文献类型：
--
作者：
Jiajing Yang;Zongbin Li;Bo Yang;Haile Yan;Daoyong Cong;Xiang Zhao;Liang Zuo
The remarkable magnetocaloric effect demonstrated in Ni-Mn-based multi-functional alloys benefits a lot from large magnetization difference ΔMand low thermal hysteresis ΔHhysupon the magnetostructural transformation. Here, we present the effective manipulation of the magnetostructural transformation as well as the related magnetocaloric effect through simultaneously introducing Co and Si to ternary Ni-Mn-Sn alloys. Such co-doping method allows not only large magnetization difference but also low thermal hysteresis, yielding giant inverse magnetocaloric effect in a Ni39Co9Mn42Sn9Si1alloy. Under the magnetic field change of 5T, the field-induced entropy change ΔSMup to 23.5 Jkg−1K−1and the reversible ΔSMof 23.4 Jkg−1K−1are obtained. Moreover, giant refrigeration capacity up to 402 Jkg−1is also achieved, being much higher than those reported previously. Furthermore, large field-induced adiabatic temperature change ΔTadup to −4.0 K and reversible ΔTadof −1.8 K are demonstrated through the direct measurements under a low magnetic field change of 1.5 T. Thus, multi-component alloying could be employed as an effective route towards the design of high-performance Heusler-type magnetocaloric materials.
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