Tailored martensitic transformation and enhanced magnetocaloric effect in all-d-metal Ni_(35)Co_(15)Mn_(33)Fe_(2)Ti_(15)alloy ribbons  

作　　者：Yong Li Liang Qin Hongguo Zhang Lingwei Li 李勇;覃亮;张红国;李领伟(Key Laboratory of Novel Materials for Sensor of Zhejiang Province,College of Materials&Environmental Engineering,Hangzhou Dianzi University,Hangzhou 310018,China;Faculty of Materials and Manufacturing,Key Laboratory of Advanced Functional Materials,Ministry of Education of China,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]Key Laboratory of Novel Materials for Sensor of Zhejiang Province,College of Materials&Environmental Engineering,Hangzhou Dianzi University,Hangzhou 310018,China [2]Faculty of Materials and Manufacturing,Key Laboratory of Advanced Functional Materials,Ministry of Education of China,Beijing University of Technology,Beijing 100124,China

出　　处：《Chinese Physics B》2022年第8期587-593,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.52001102 and 51771003)。

摘　　要：The crystal structure,martensitic transformation and magnetocaloric effect have been studied in all-d-metal Ni35Co15Mn33Fe2Ti15alloy ribbons with different wheel speeds(15 m/s(S15),30 m/s(S30),and 45 m/s(S45)).All three ribbons crystalize in B2-ordered structure at room temperature with crystal constants of 5.893(2)A,5.898(4)A,and5.898(6)A,respectively.With the increase of wheel speed,the martensitic transformation temperature decreases from230 K to 210 K,the Curie temperature increases slightly from 371 K to 378 K.At the same time,magnetic entropy change(△Sm)is also enhanced,as well as refrigeration capacity(RC).The maximum△Sm of 15.6(39.7)J/kg·K and RC of85.5(212.7)J/kg under?H=20(50)k Oe(1 Oe=79.5775 A·m^(-1))appear in S45.The results indicate that the ribbons could be the candidate for solid-state magnetic refrigeration materials.

关 键 词：martensitic transformation magnetocaloric effect wheel speeds all-d-metal Heusler ribbons 

分 类 号：TG132.2[一般工业技术—材料科学与工程] TB64[金属学及工艺—合金] O469[金属学及工艺—金属学]