Effects of manganese substitution on magnetic and magnetostrictive properties of Tb_(0.5)Dy_(0.5)(Fe_(1-x)Mn_(x))_(1.92)/epoxy composites with spherical single-crystal particles  

作　　者：Dashun Dong Geng Wei Jin Qian Ye Huang Li Zhang Hehe Ding Yangguang Shi Shaolong Tang 

机构地区：[1]Jiangsu Key Laboratory for Nanotechnology,Collaborative Innovation Center of Advanced Microstructures,National Laboratory of Solid State Microstructures,Department of Physics,Nanjing University,Nanjing 210093,China [2]Key Laboratory of Aerospace Information Materials and Physics(MIIT),Department of Applied Physics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Journal of Rare Earths》2023年第8期1211-1216,I0004,共7页稀土学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(51671102 and 11475086)。

摘　　要：Spherical Tb_(0.5)Dy_(0.5)(Fe_(1-x)Mn_(x))_(1.92)(x=0,0.05,0.10 and 0.15)single-crystal particles were prepared.The magnetic anisotropy of the alloy decreases as x increases from 0 to 0.15.Subsequently,we prepared giant magnetostrictive composites with these spherical Tb_(0.5)Dy_(0.5)(Fe_(1-x)Mn_(x))_(1.92)single-crystal particles.As a consequence,well<111>-orie nted Tb_(0.5)Dy_(0.5)(Fe_(1-x)Mn_(x))_(1.92)composites with 55 vol%Tb_(0.5)Dy_(0.5)(Fe_(1-x)Mn_(x))_(1.92)particles were obtained.The Tb_(0.5)Dy_(0.5)(Fe_(0.9)Mn_(0.1))_(2)composite manifests a good low-field magnetostrictive property and saturation magnetostriction at an axial pressure of 10 MPa,λ_(‖,saturation)≈2100 ppm,which is larger than that of the commercially available Terfenol-D(1400-1800 ppm).The preparation of composites with single crystal spherical powders may be an effective solution of developing high-performance magnetostrictive composites.

关 键 词：Tb-Dy-Fe-Mn Spherical single-crystal powder MAGNETOSTRICTION Magnetostrictive composites Rare earths 

分 类 号：TB332[一般工业技术—材料科学与工程]