Effective magnetostriction and magnetomechanical coupling of terfenol-D composites

Guo, Z.J., Busbridge, Simon C., Piercy, A.R., Zhang, Z.D., Zhao, X.G. and Wang, B.W. (2001) Effective magnetostriction and magnetomechanical coupling of terfenol-D composites Applied Physics Letters, 78 (22). pp. 3490-3492. ISSN 0003-6951

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Abstract

Epoxy and glass matrix Terfenol-D composites have been produced by using a cold and hot compression-molding technique, respectively. The static and dynamic magnetic and magnetomechanical properties of samples with a volume fraction Vf in the range of 10% to 82% have been investigated as functions of bias field, frequency, and ac drive field. The epoxy composites have a greater saturation magnetostrain than the glass composite with the same Vf. The elastic modulus of the epoxy composites is dominated by that of the matrix, Em. Increasing the value of Em reduces the measured magnetostriction lambdac of the composites. A model, based on the strain related energy equilibrium, has been developed to describe the experimental results for Vf and Em dependences of lambdac and the magnetomechanical coupling coefficient k33. It is concluded that an optimum k33 value can be obtained by choosing a matrix with an appropriate elastic modulus. ©2001 American Institute of Physics.

Item Type: Journal article
Subjects: H000 Engineering
DOI (a stable link to the resource): 10.1063/1.1377046
Faculties: Faculty of Science and Engineering > School of Computing, Engineering and Mathematics > Engineering and Product Design Research > Smart Systems and Materials
Depositing User: editor engineering
Date Deposited: 26 Jan 2007
Last Modified: 21 Jun 2013 14:14
URI: http://eprints.brighton.ac.uk/id/eprint/1658

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