Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31561
Title: Dynamic magnetoelastic properties of epoxy-bonded Terfenol-D particulate composite with a preferred [112] crystallographic orientation
Authors: Or, SW 
Carman, GP
Keywords: [112] Crystallographic orientation
Domain-wall motion
Dynamic magnetoelastic properties
Magnetostrictive particulate composites
Terfenol-D
Issue Date: 2005
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on magnetics, 2005, v. 41, no. 10, p. 2790-2792 How to cite?
Journal: IEEE transactions on magnetics 
Abstract: The dynamic magnetoelastic properties of a [112]-oriented magnetostrictive composite comprising 0.49 volume fraction of needle-shaped, [112]-oriented Terfenol-D particles and Spurr epoxy were investigated as a function of magnetic bias field. These properties included elastic moduli (E 3 H and E 3 B), dynamic strain coefficient (d 33), and magnetoelastic coupling coefficient (k 33). A randomly oriented composite with 0.51 volume fraction of irregular-shaped, ball-milled Terfenol-D particles was also prepared and characterized for comparison. It was found that the [112] preferential particulate orientation increases non-180° domain-wall motion in the [112]-oriented composite, resulting in maximum negative-ΔE, d 33, and k 33 values of about 10%, 5.5 nm/A, and 0.34, respectively. These are the largest property values reported as yet for magnetostrictive particulate composites, being up to 67% larger than the randomly oriented composite and approach to 65% of the monolithic Terfenol-D.
URI: http://hdl.handle.net/10397/31561
ISSN: 0018-9464
EISSN: 1941-0069
DOI: 10.1109/TMAG.2005.854771
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