Magnetostrictive Fe-Ga/Cu Nanowires Array With GMR Sensor for Sensing Applied Pressure

Jung Jin Park, Kotha Sai Madhukar Reddy, Bethanie Stadler, Alison Flatau

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

We have demonstrated magnetostrictive nanowire (NW) array-based pressure sensing that utilizes magneto-mechanical transduction in an NW array and electro-magnetic transduction in a giant magnetoresistance (GMR) magnetic field sensor. The pressure sensing is performed by pressing the vertically aligned multilayered Fe80Ga20/Cu NW array against the GMR surface causing NW deflections. Micromagnetic simulations were used to visualize changes in NW magnetization state and resulting stray fields with applied mechanical strain. This magneto-mechanical transduction was similar to that measured experimentally by the GMR sensors with applied pressure.

Original languageEnglish (US)
Article number7833128
Pages (from-to)2015-2020
Number of pages6
JournalIEEE Sensors Journal
Volume17
Issue number7
DOIs
StatePublished - Apr 1 2017

Keywords

  • Fe-Ga
  • magnetostriction
  • nanowire
  • pressure sensor

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