New development of superconductive graphite intercalation compounds - Characterizations of CaC6 and synthesis of MgCx -
Project/Area Number |
24560830
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Inorganic materials/Physical properties
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Research Institution | Tokyo Polytechnic University |
Principal Investigator |
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Project Period (FY) |
2012-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
|
Keywords | 黒鉛層間化合物 / 炭素材料 / 超伝導 / 導電性材料 / CaC6 / 電気伝導率 / 大気安定性 / ホール係数 / 磁気抵抗 / 超伝導性 / ゼーベック係数 / MgC6 / KC8 |
Outline of Final Research Achievements |
Calcium-graphite intercalation compound (Ca-GIC) has attracted attention because they transition into a superconducting state at higher temperature than other GICs. In this work, Ca-GIC is characterized and compared with conventional GICs such as K-GIC. The metallic character of Ca-GIC was enhanced and its Seebeck coefficient was small. Due to the degradation of its graphitic structure, the Ca-GIC had lower thermal conductivities than other GICs. Furthermore, when lithium from the synthesis of the Ca-GIC remained in the structure, its transition temperature decreased. Magnesium-GIC (Mg-GIC) has not yet been synthesized, but it is expected to have a higher transition temperature than Ca-GIC. We attempted to synthesize Mg-GIC in this work. Based on the Seebeck coefficients of some of the products of reactions between Mg and graphite, Mg-GIC might have formed in a small area of the graphite. However, we could not confirm the change in structure expected from the formation of Mg-GIC.
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Report
(5 results)
Research Products
(39 results)
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[Presentation] Charge transfer doping of multilayer graphene nanoribbon by metal-chloride intercalation2016
Author(s)
H. Miyazaki, R. Matsumoto, Katagiri, D. Nishide, R. Ifuku, Y. Yamazaki, T. Matsumoto, K. Ueno, D. Yamaoka, Y. Awano, T. Sakai
Organizer
Graphene Week 2016
Place of Presentation
ワルシャワ(ポーランド)
Year and Date
2016-06-13
Related Report
Int'l Joint Research
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[Presentation] Intetrcalation Doping with Metal Chlorides in Low-Temperature-Grown Multilayer CVD Graphene for Interconnect Applications2015
Author(s)
H. Miyazaki, R. Matsumoto, M. Katagiri, D. Nishide, R. Ifuku, M. Takahashi, Y. Yamazaki, T. Matsumoto, N. Sakuma, K. Ueno, T.
Organizer
SSDM2015
Place of Presentation
札幌(北海道)
Year and Date
2015-09-27
Related Report
Int'l Joint Research
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