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Micromachines 2017, 8(4), 109; doi:10.3390/mi8040109

Field-Dependent Resonant Behavior of Thin Nickel Film-Coated Microcantilever

Department of Physics, Kookmin University, Seoul 136-702, Korea
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Author to whom correspondence should be addressed.
Academic Editors: Joost Lötters and Nam-Trung Nguyen
Received: 10 February 2017 / Revised: 27 February 2017 / Accepted: 27 March 2017 / Published: 1 April 2017
(This article belongs to the Special Issue Mechanical Systems Approaching Nanoscales and Beyond)
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Abstract

Herein we describe the vibration of a thin nickel film-coated microcantilever at resonance under an external magnetic field. The resonance frequency and the mechanical loss—experimentally observed while varying the magnetic field—closely follow the field-dependence of the magnetostriction coefficient, indicating the strong coupling between the mechanical motion and the magnetostriction through the surface stress. Comparing to the surface stress model based on uniformly distributed axial load, the magnetostriction coefficient of a nickel film has been estimated, and its value is comparable to the reported one. Our study suggests that the nature of the surface stress originating from the magnetostrictive film can govern and modulate the resonant behavior of miniaturized mechanical systems. View Full-Text
Keywords: microcantilever; mechanical resonance; thin magnetic film; magnetostriction; surface stress microcantilever; mechanical resonance; thin magnetic film; magnetostriction; surface stress
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Park, Y.; Lee, E.J.; Kouh, T. Field-Dependent Resonant Behavior of Thin Nickel Film-Coated Microcantilever. Micromachines 2017, 8, 109.

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