Development of magnetostrictive Fe-Ga and Fe-Pd thin films

Teiko Okazaki, Satoru Watanabe, Norimasa Okanisi, Toshiro Ono, Yasubumi Furuya, Munemi Michigami, Yasuo Sakisaka, Ichiro Takeuchi, Manfred Wuttig

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


The giant magnetostrictive films exhibit promising device applications for micro-machines and sensor systems due to high response velocity and huge stress created by the magnetostriction. We developed magnetostrictive bimorph-type FeToPdso or FegsGan (positive magnetostriction)/Al/Ni(negative magnetostriction) thin films by magnetron sputtering. Magnetostriction of these films measured by a bending cantilever beam method has reached 250-300 ppm in the small magnetic field of 1.0 kOe and exhibits little hysteresis. Moreover, the magnetostrictive characteristics do not change under low alternating magnetic field. The magnetoelastic coefficient of these films is 25-30 MPa, which is comparable to the coefficient of the PbTiOs-PbZrOs system. These metallic sensor/actuator materials are useful for applications in magnetostrictive 2D- scanners and remote-interrogated tire sensors.

Original languageEnglish
Title of host publicationMechanically Active Materials
PublisherMaterials Research Society
Number of pages6
ISBN (Print)1558998071, 9781558998070
Publication statusPublished - 2004
Externally publishedYes
Event2004 MRS Fall Meeting - Boston, MA, United States
Duration: 2004 Nov 292004 Dec 2

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2004 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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