| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Carbon nanotubes that encapsulate ferromagnetic iron nanowire (Fe@CNTs) exhibit remarkably high coercivity due to its high aspect ratio shape. Because of this characteristic, various applications of Fe@CNT have been expected. This study focused on the following two points that are required for the applications: (i) to find out growth conditions of Fe@CNTs that give further enhancement of those coercivity, (ii) to develop methods to fabricate sheets that comprise Fe@CNT fibers.
It was found that the coercivity of Fe@CNTs was enhanced to more than 2.0 kOe by using Ni film with oxidation treatment as a catalyst for the growth of Fe@CNTs. In addition, the free-standing Fe@CNT sheet, which was the Fe@CNT film that was not supported by the substrate, was successfully fabricated by embedding the Fe@CNT film on the substrate in resin and detaching the film from it. This Fe@CNT sheet exhibited the same magnetic property as that before the detaching.
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