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X-ray diffraction characterization of magnetostriction in Terfenol-D

Journal Article · · Powder Diffraction
The magnetostrictive response of a Terfenol-D pellet was measured via a laboratory-based X-ray diffractometer. X-ray diffraction patterns were collected from the pellet sample with and without the presence of an applied magnetic field (~30 mT) generated by placing a large magnet under the pellet. A standard reference material, Silicon 640c, was employed as an internal standard. Magnetostriction values of 323 and 227 ppm Δl/l were determined for the (104) and (110) indexed peaks, respectively, assuming a rhombohedral structure for Terfenol-D. A threshold noise level value of ~20 to 30 ppm Δl/l was suggested based on before/after measurements in the absence of the applied field. No clear evidence of domain wall rotation was detected via changes in relative intensities of diffraction peaks in the presence of the applied magnetic field.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003525
OSTI ID:
2584388
Journal Information:
Powder Diffraction, Journal Name: Powder Diffraction Journal Issue: 1 Vol. 40; ISSN 1945-7413; ISSN 0885-7156
Publisher:
Cambridge University PressCopyright Statement
Country of Publication:
United States
Language:
English

References (7)

On relationship between annealing treatment and magnetostriction behavior of Fe–16Cr–2.5Mo damping alloy journal January 2014
In-situ studies of low-field large magnetostriction in Tb1−xDyxFe2 compounds by synchrotron-based high-energy x-ray diffraction journal February 2016
Structural, magnetic and Mössbauer studies on magnetostrictive Ho1−xTbxFe1.95 [x=0–1] journal May 2009
Effect of the anisotropic magnetostriction on Terfenol-D based fiber Bragg grating magnetic sensors journal December 2011
PDF-5+: a comprehensive Powder Diffraction File™ for materials characterization journal April 2024
Morphotropic Phase Boundaries in Ferromagnets: Tb 1 − x Dy x Fe 2 Alloys journal July 2013
Magnetostriction observed by X-ray diffraction in iron journal October 2005

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