Exchange-Coupling in Magnetic Nanoparticles to Enhance Magnetostrictive Properties

Radousky, H ; McElfresh, M ; Berkowitz, A ; Carman, G P

Lawrence Livermore National Laboratory

关键词: Actuators;    36 Materials Science;    Damping;    Magnetic Materials;   

DOI  :  10.2172/15013323
RP-ID  :  UCRL-ID-147081
RP-ID  :  W-7405-ENG-48
RP-ID  :  15013323

美国|英语

来源: UNT Digital Library

【 摘 要 】

Spark erosion is a versatile and economical method for producing particles of virtually any type of material that has a nominal conductivity: particles can be prepared in sizes ranging from a few nm to tens of {micro}m. The purpose of this feasibility study was to demonstrate the capability of making spherical particles of specific magnetic materials. We chose (Tb Dy)Fe{sub 2} (Terfenol-D) due to its potential use as the magnetostrictive component in magneto-elastomer composites. We also chose to work with pure Ni as a model system. Improvements in the properties of magneto-elastomer composites have broad applications in the areas of sensor development, enhanced actuators and damping systems.