Studies of dynamic magnetostriction by time-resolved scanning fiber interferometry
- 30 August 1993
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 63 (9) , 1200-1202
- https://doi.org/10.1063/1.109770
Abstract
Measurements of the magnetostrictive response of nickel cylinders to sudden step changes in applied magnetic field are performed with a time-resolved scanning fiber interferometer. A crossover is observed, as a function of decreasing cylinder diameter, from eddy current- to longitudinal phonon-limited response times. Spatially resolved measurements reveal the nonuniform distortion of the face of the rod as the induced magnetization propagates in toward the center. The results demonstrate, here in the context of magnetics, the general promise of time-resolved scanning probe methods.Keywords
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