| Project/Area Number |
23656117
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | ネオジム磁石 / 薄膜 / 微細着磁 / リニアモータ / レーザ加熱 / 着磁 / 微細化 / MEMS / 薄膜磁石 / 減磁 / 飽和 / マイクロリニアモータ / ホールプローブ |
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| Research Abstract |
Recently, a multilayered thin film Nd2Fe14B/Ta permanent magnet (TFPM), which not only has a high remnant flux density and a high coercive force similar to those of conventional sintered bulk neodymium magnets, but also has high heat tolerance, was developed. In this study, micro magnetization assisted by laser heating under an external DC magnetic field was proposed and tested. The laser beam conditions were determined using unsteady heat conduction analysis. Using a magnetic field analysis simulator, neodymium PM arrays are designed to apply the DC magnetic field to the TFPM. Magnetized strips of 0.1mm in width were patterned in the TFPM of 4.5micrometer in thickness Agreement between measured and simulated magnetic flux densities over the TFPM was obtained. Furthermore, a MEMS linear motor utilizing TFPM was also developed.
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