| Summary: | 碩士 === 國立臺灣海洋大學 === 光電科學研究所 === 100 === The magnetostrictive materials are potential for MEMS and device application, because of their capability to convert magnetic energy to mechanical energy. This thesis focuses on (Fe81-XCoXGa19)B20(X =0、7、11、19、23) arc discharge into ingots, spray into a thin strip of magnetostrictive, to X-ray diffraction (XRD) and vibration sample magnetometer (VSM), observed magnetic properties.
VAC-6030 thin with heat treatment, to observe the magnetostrictive characteristics of vibrating sample magnetometer (VSM), the nature of the observed magnetic.
Measured the magnetic part, (Fe81-XCoXGa19)B20(X =0、7、11、19、23) ribbons through the VSM measurement results, we found that with the increase in X-content, along with the coercive force (Hc)rising on behalf of the magnetic dipole with the increase of cobalt, the magnetic dipole are more difficult to flip, and saturation magnetization decrease with increasing X, indicating that the magnetic properties fall.
Of magnetostriction part of strain gage to measure the saturation magnetostriction, Co 23% magnetostrictive Co 0% good, and when the turn angle is high, the value of the magnetostriction rise phenomenon.
VAC6030 on the as-cast, 200,250,300,340 degrees do VSM, found that heat treatment, the impact will be negligible magnetostriction at high angle stretching larger, while the heat treatment temperature is high, stretching the value of feeling but smaller.
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