Prototype microactuators driven by magnetostrictive thin films

Sang Ho Lim, S. H. Han, H. J. Kim, Y. S. Choi, Jin Woo Choi, C. H. Ahn

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Si microcantilevers coated with giant magnetostrictive Sih-Fe or Tb-Fe thin films are fabricated and the deflection of the cantilevers is measured as a function of magnetic field. In the case of a microcantilever with the dimension 3.7 mm (length) × 1.0 mm (width) × 13 μm (thickness), for example, a very large deflection of 52 μm is achieved at 150 Oe from the first ascending magnetic field, by the coating of a Sm42.7Fe56.9B0.4 thin film with the thickness of 1.2 μm. Total deflection doubles when a magnetic field of the same amplitude (150 Oe) is applied alternately in the length and the width directions. Relatively large deflections are also observed for Tb-Fe thin film based microcantilevers as well as other Sm-Fe based cantilevers. The level of deflection achieved in the present magnetostrictive microcantilevers is considered to be suitable for microdevices applications.

Original languageEnglish
Pages (from-to)2039-2041
Number of pages3
JournalIEEE Transactions on Magnetics
Volume34
Issue number4 PART 1
DOIs
Publication statusPublished - 1998 Dec 1
Externally publishedYes

Fingerprint

Microactuators
deflection
prototypes
Magnetic fields
Thin films
thin films
magnetic fields
Coatings
coatings

Keywords

  • Magnetostrictive thin films
  • Microcantilevers
  • Sm-fe alloys
  • Tb-fe alloys

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Lim, S. H., Han, S. H., Kim, H. J., Choi, Y. S., Choi, J. W., & Ahn, C. H. (1998). Prototype microactuators driven by magnetostrictive thin films. IEEE Transactions on Magnetics, 34(4 PART 1), 2039-2041. https://doi.org/10.1109/20.706785

Prototype microactuators driven by magnetostrictive thin films. / Lim, Sang Ho; Han, S. H.; Kim, H. J.; Choi, Y. S.; Choi, Jin Woo; Ahn, C. H.

In: IEEE Transactions on Magnetics, Vol. 34, No. 4 PART 1, 01.12.1998, p. 2039-2041.

Research output: Contribution to journalArticle

Lim, SH, Han, SH, Kim, HJ, Choi, YS, Choi, JW & Ahn, CH 1998, 'Prototype microactuators driven by magnetostrictive thin films', IEEE Transactions on Magnetics, vol. 34, no. 4 PART 1, pp. 2039-2041. https://doi.org/10.1109/20.706785
Lim, Sang Ho ; Han, S. H. ; Kim, H. J. ; Choi, Y. S. ; Choi, Jin Woo ; Ahn, C. H. / Prototype microactuators driven by magnetostrictive thin films. In: IEEE Transactions on Magnetics. 1998 ; Vol. 34, No. 4 PART 1. pp. 2039-2041.
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