Study on magnetization reversal behavior for annealed Nd2Fe14B/α-Fe nancomposite alloys

作     者：ZHANG Pengyue PAN Minxiang GE Hongliang YUE Ming LIU Weiqiang ZHANG Pengyue;PAN Minxiang;GE Hongliang;YUE Ming;LIU Weiqiang

作者机构：College of Materials Science & Engineering China Jiliang University Hangzhou 310018 China College of Materials Science & Engineering Beijing University of Technology Beijing 100124 China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2013年第31卷第8期

页      面：759-764页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Foundation item: Project supported by Project of Zhejiang Province Innovative Research Team (2010R50016)  Zhejiang Provincial Natural Science Foundation (Y6100640)  National Natural Science Foundation of China (51001092  51271172) and National Public Profession Sci- entific Research (201210107) 

主　　题：nanocomposite magnetization reversal behavior recoil loop rare earths 

摘      要：Effect of thermal annealing on the magnetization reversal behavior of α-Fe/Nd2Fe14B alloys was investigated. A drastic in- crease of the remanence Mr from 0.67 up to 0.87 T and remanence ratio Mr/Ms from 0.66 up to 0.76, respectively, was observed in the α-Fe/NdEFel413 alloys annealed at 610 ℃ as compared with the as-quenched sample. Whereas the further annealing at 680 ℃ resulted in a strong increase of the corecivity Hc as high as 491 kA/m but a slight decrease in Mr. The analysis result of the magnetization re- versal behavior showed that the maximum value of the integrated recoil loop area about 1.58 kJ/m3 was obtained in the α-Fe/Nd2Fe14B alloys at the annealing temperature of 610℃, significantly lower than other annealed samples. This indicated a sig- nificant advantage for the application of this material as permanent magnets in electrical machines and generators due to a low energy loss.