Cao, H.
, Gehring, P.
, Devreugd, C.
, Rodriguez Rivera, J.
and Viehland, D.
(2009),
Role of Nanoscale Precipitates on the Enhanced Magnetostriction of Heat-Treated Galfenol (Fe<sub>1-x</sub>Ga^dx) Alloys, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=610005
(Accessed April 24, 2024)
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Role of Nanoscale Precipitates on the Enhanced Magnetostriction of Heat-Treated Galfenol (Fe1-xGa^dx) Alloys
Published
Author(s)
H Cao, , Christopher Devreugd, , D. Viehland
Abstract
We report neutron diffuse scattering measurements on highly magnetostrictive Fe1-xxGax alloys (0.14 < x < 0.20) with different thermal treatments. This diffuse scattering scales with magnetostriction and exhibits asymmetric peaks at the (100) and (300) reciprocal lattice positions that are consistent with the coexistence of short-range ordered, coherent nanometer-scale precipitates embedded in a long-range ordered, body-centered cubic matrix. A large peak splitting is observed at (300) for x = 0.19, which indicates that the nanoprecipitates are not cubic and have a large elastic strain. This implies a structural origin for the enhanced magnetostriction.Citation
Physical Review Letters
Volume
102
Pub Type
Journals
Download Paper
Keywords
diffuse scattering, galfenol, magnetostriction, neutron scattering
Citation
Created March 24, 2009, Updated October 12, 2021