Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 249, Issue 3, Pages 519-523Publisher
ELSEVIER
DOI: 10.1016/S0304-8853(02)00474-2
Keywords
magnetostrictive unimorph; multilayer; spin reorientation transition; nonlinearity; sub-harmonic excitation
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The results of development of giant magnetostrictive multilayers with spin reorientation transition (SRT) for microactuators are presented. Manifestations of magneto-mechanical instability and nonlinearity near SRT are studied experimentally and simulated numerically. Improvement of magneto-mechanical sensitivity near SRT is demonstrated for various modes of linear and nonlinear actuation of magnetostrictive unimorph. Limitations of sensitivity caused by magnetic field distortions are described by a numerical model, the results are compared with the experimental data. (C) 2002 Elsevier Science B.V. All rights reserved.
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