Optimised co-electrodeposition of Fe–Ga alloys for maximum magnetostriction effect

Jack H.G. Ng, Paul M. Record, Xinxin Shang, Krystian L. Wlodarczyk, Duncan P. Hand, Giuseppe Schiavone, Eitan Abraham, Gerard Cummins, Marc P.Y. Desmulliez

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10 Citations (Scopus)
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Abstract

The article reports the electrochemical deposition and characterisation of a 600 nm thick Fe–Ga alloy film plated on a 20 μm thick copper cantilever. The co-electrodeposition process was optimised for the production of Fe–Ga in the ratio of 81% Fe to 19% Ga, which is known to maximize the magnetostriction (MS) effect. The foil was cut into 1 mm wide and 5 mm long cantilevers and the deflection was measured with DC co-planar magnetic field intensities ranging from 0 to 60 kA/m. The maximum strain coefficient λ was measured to be 96 ppm for a field strength range 58 kA/m. The field strain plot over exhibits a typical second order magnetically induced strain curve, as seen in other magnetostrictive materials.
Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalSensors and Actuators A: Physical
Volume223
Early online date2 Jan 2015
DOIs
Publication statusPublished - 1 Mar 2015

Keywords

  • Galfenol
  • Magnetostriction
  • Electrodeposition
  • Magnetic actuation
  • Magnetostrictive coefficient
  • Alloy electrodeposition

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