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Galfenol Thin Films and Nanowires
Bethanie J H Stadler1,2, Madhukar Reddy3, Rajneeta Basantkumar4
1Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA. stadler@umn.edu.
Sensors (Basel, Switzerland)
|August 15, 2018
Summary
Galfenol (Fe1-xGax) smart material can be electrochemically deposited into films and nanowires. This review covers Galfenol deposition, characterization, and applications in sensors and medical devices.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Galfenol (Fe1-xGax) is a unique magnetostrictive alloy.
- Electrochemical deposition offers advantages for creating Galfenol structures.
Purpose of the Study:
- To review the deposition, characterization, and applications of Galfenol thin films and nanowires.
- To highlight advancements in electrochemical deposition of Galfenol.
Main Methods:
- Electrochemical deposition using citrate complexing, rotating disk electrode, Cu seed layers, and pulsed deposition.
- Characterization of crystal structure and magnetostriction.
- Fabrication of Galfenol nanowires using anodic aluminum oxide templates.
Main Results:
- Stable electrochemical deposition process developed for Galfenol.
- Polycrystalline Galfenol films and nanowires exhibit significant magnetostriction.
- Epitaxial texture achieved on GaAs substrates.
- Segmented Galfenol/Cu nanowires engineered for specific magnetic properties.
Conclusions:
- Electrochemical deposition is a viable method for producing Galfenol films and nanowires.
- Galfenol nanostructures show promise for various applications.
- Further research into Galfenol nanostructures can lead to novel devices.
