Abstract
Rapid-solidification method was applied to make the Fe-15 at%Ga ribbon whose thickness was about 100 μm with improvement of ductility. The Fe-15 at%Ga ribbon sample showed a very large magnetostriction of εmax = -400 × 10-6 in comparison with εmax = - 40 × 10-6 for the conventionally melt-worked bulk material at applied magnetic field, 955 kA/m. In the bulk material with random crystal orientation, the dependence of magnetostriction on magnetization direction (θ) to the surface of ribbon was scarcely recognized. On the contrary, in rapid-solidified ribbon, that dependence was extraordinarily enhanced and large magnetostriction was obtained in the thickness direction of ribbon (θ≒90°) where coercive force showed the maximum value. Based on these experimental results, it is considered that the large magnetostriction is strongly correlated with special metallic microstructures in the rapid-solidified Fe-15 at%Ga ribbon with very strong magnetic anisotropy. Fe-Ga rapid-solidified ribbon has the promising possibility as a new magnetostrictive material as it has large magnetostriction, ductility and very small magnetostriction hysteresis.
Original language | English |
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Pages (from-to) | 901-904 |
Number of pages | 4 |
Journal | Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals |
Volume | 66 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2002 Sep |
Externally published | Yes |
Keywords
- Actuator
- Magnetic anisotropy
- Magnetostriction
- Rapid-solidification
- Sensor
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry