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Dynamic magnetomechanical properties of [112]-oriented Terfenol-D/epoxy 1–3 magnetostrictive particulate composites

J. Appl. Phys. 93, 8510 (2003); doi:10.1063/1.1555979

Issue Date: 15 May 2003

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S. W. Or, N. Nersessian, G. P. McKnight, and G. P. Carman
Mechanical and Aerospace Engineering Department, University of California, Los Angeles, Engineering IV, Los Angeles, California 90095-1597
The dynamic magnetomechanical properties of a Terfenol-D/epoxy 1–3 magnetostrictive particulate composite fabricated using 49% volume fraction of needle-shaped, [112]-oriented Terfenol-D particles were investigated as a function of magnetic bias field (HBias). A nonoriented composite with 51% volume fraction of irregular-shaped, ball-milled Terfenol-D particles was also prepared and characterized for comparison. It was found that the composites exhibit a similar qualitative trend in dynamic strain coefficient (d33) and dynamic susceptibility (chi33) with the oriented type possessing much higher values than the nonoriented type for all HBias. Data for the ratio d33/chi33 indicated that these increments in d33 and chi33 in the oriented composite are mainly attributed to [112] particulate crystallographic orientation. ©2003 American Institute of Physics.
History: Presented 15 November 2002
Permalink: http://link.aip.org/link/?JAPIAU/93/8510/1
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KEYWORDS and PACS

Keywords
PACS
  • 75.50.Dd
    Nonmetallic ferromagnetic materials
  • 75.80.+q
    Magnetomechanical and magnetoelectric effects, magnetostriction
  • 75.50.Tt
    Fine-particle magnetic systems; nanocrystalline materials
  • 75.40.Gb
    Dynamic properties of magnetic materials including dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc
  • 75.30.Cr
    Saturation moments and magnetic susceptibilities in magnetically ordered materials
  • YEAR: 2003

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PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
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REFERENCES (12)

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