Influence of gadolinium and dysprosium substitution on magnetic properties and magnetocaloric effect of Fe78-xRExSi4Nb5B12Cu1 amorphous alloys
磁性和 Fe78xRExSi4Nb5B12Cu1 非结晶的合金的 magnetocaloric 效果上的金轧和镝替换的影响作者机构:Institute of Advanced Magnetic MaterialsHangzhou Dianzi UniversityHangzhou 310012China School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640China Guangdong Institute of Special Equipment Inspection and ResearchGuangzhou 528251China Institut des Molecules et Materiaux du Mans UMR CNRS 6283Le Mans UniversiteAvenue MessiaenLe MansF-72085France School of Materials Science and EngineeringNanyang Technological University639798Singapore Singapore-HUJ Alliance for Research and Enterprise(SHARE)Nanomaterials for Energy and Energy-Water Nexus(NEW)Campus for Research Excellence and Technological Enterprise(CREATE)Singapore138602Singapore
出 版 物:《Journal of Rare Earths》 (稀土学报(英文版))
年 卷 期:2020年第38卷第12期
页 面:1317-1321页
核心收录:
学科分类:08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程(可授工学、理学学位)]
基 金:Project supported by the National Natural Science Foundation of China(51874143,51801047) the Natural Science Foundation of Guangdong Province(2017A030313317) Natural Science Foundation of Zhejiang Province(LY20E010002)
主 题:Magnetic properties Magnetocaloric effect Refrigeration capacity Rare earths
摘 要:Amorphous Fe78-xRExSi4 Nb5 B12Cu1(RE=Gd,Dy) ribbons with different RE contents were prepared by melt spinning to investigate the effect of heavy rare earth(Gd,Dy) substitution on the hyperfine structure,magnetic properties and magnetocaloric *** Curie temperature of RE substituted alloys,hyperfine field and magnetic moments of Fe atoms initially increase up to 1 at% RE content and then decrease monotonously for increasing RE content up to 10 at%.The dependence of magnetic entropy change(-△SM) and refrigeration capacity(RC) of the alloys on RE contents displays the same *** RCAREA values of the alloys substituted with 1 at% Gd and Dy are similar to those of recently reported Fe-based metallic glasses with enhanced RC values compared with those of Gd5 Ge1.9Si2 ***-△SM and RC values,negligible coercive force and hysteresis commonly make these Fe78-xREx-Si4 Nb5 B12Cu1 amorphous alloys as low-cost candidates for high-temperature magnetic refrigeration.