Fabrication of multiferroic composite actuator material by combining superelastic TiNi filler and a magnetostrictive Ni matrix

Abstract

This research aims to design and verify a new magnetically driven multiferroic composite actuator material which is characterized by large strain and a rapid response speed. The composite actuator material is designed to consist of a magnetostrictive Ni matrix and superelastic TiNi alloy fiber fillers whose volume fraction was changed. The spark plasma sintering (SPS) method which is characterized by short time and low temperature processing was used to join these two different material elements. Cross-sectional observation by optical micrograph, mechanical compression tests, and magnetostriction measurements were carried out to verify the perfection of the adhesion state of the TiNi filler and nickel matrix as well as the amplification effect of magnetostriction. As the experimental result, the amplification effect of about a maximum of 1.5 times magnetostriction was verified in the fabricated composite actuator.

Phase Structure and Electrical Properties of Sm-Doped BiFe0.98Mn0.02O3 Thin Films

“…In addition, the coupling between different properties of multiferroic materials will produce new properties, such as magnetoelectric effects. These materials have great development potential in the miniaturization and multi-functionalization of devices, as well as in a wide range of applications in the fields of magnetoelectric memory [ 3 , 4 ], sensors [ 5 ], and drivers [ 6 ]. Multiferroic materials are some of the most valuable multifunctional materials, and they have good application prospects in the field of multiferroic devices.…”

Crystallographic orientation-dependent magnetic properties of a PrCo5permanent magnet prepared by hot deformation

“…Thirdly, the correlation between the crystallographic orientation texture development and the hot deformation process should be fully addressed. Therefore, in this work, a magnetically-anisotropic PrCo 5 permanent bulk magnet, prepared by a hot-press and hot deformation method using a spark plasma sintering technique, 15,16 has been carefully investigated. The major objective of the present work is to address the above issues and to increase the knowledge about the correlation between crystallographic orientation textures and magnetic properties.…”

Magnetic properties and structure of bulk nanocrystalline Sm(CoCuFeZr)7.6 sintered magnet

“…17,18 These characteristics can effectively restrain the grains growth and allow the formation of high-density nanocrystalline materials in a short time. 19,20 In this paper, we report the structure and magnetic properties of bulk nanocrystalline Sm͑CoCuFeZr͒ 7.6 magnet prepared by SPS.…”