Growth of Fe-Ga alloy single crystals by the czochralski method and their application to vibration power generator

Shun Fujieda, Shigeru Suzuki, Akio Minato, Tsuguo Fukuda, Toshiyuki Ueno

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

An Fe-Ga alloy single crystal of about 10 mm in diameter and about 60 mm in length was grown by the Czochralski (CZ) method. The as-grown ingot was approximately oriented in the (〈100〉) direction parallel to the pull-up direction. The gallium concentration of the as-grown ingot was close to that of the starting polycrystalline alloy. The magnetostriction of about -212 ppm was observed in the (〈100〉) direction by applying a magnetic field perpendicular to the measured direction. In addition, the superior performance of vibration power generation due to the large inverse magnetostrictive effect was demonstrated by a prototype device using the as-grown Fe-Ga alloy single crystal. It is concluded that Fe-Ga alloy single crystals grown by the CZ method are promising for application to vibration power generators.

Original languageEnglish
Article number6971570
JournalIEEE Transactions on Magnetics
Volume50
Issue number11
DOIs
Publication statusPublished - 2014 Nov 1

Keywords

  • Electron backscatter diffraction (EBSD)
  • Galfenol
  • energy harvesting
  • inverse magnetostrictive effect
  • magnetostriction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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