| Project/Area Number |
22656006
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | Nagoya University |
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Principal Investigator |
TAKENAKA Koshi 名古屋大学, 工学研究科, 准教授 (60283454)
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| Project Period (FY) |
2010 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥3,620,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2010: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | 無応答材料 / 抵抗標準 / 抵抗温度係数 / 逆ペロフスカイト / ゼロ膨張 / 熱膨張制御 / 負熱膨張 / 薄膜 |
|---|
| Research Abstract |
We achieved an extremely low temperature coefficient of resistance in antiperovskite manganese nitrides Mn3AN 8A : transition metal, etc.) The resistivity of Mn3AgN shows a maximum in the paramagnetic phase. The resistivity-peak temperature is tunable by partial replacement of Ag with other elements, and we found that the temperature coefficient of resistance becomes extremely low at room temperature in Mn3Ag1-xCuxN(β=-0. 57 ppm/K2 andα23=-7. 61 ppm/K for x=0. 28 andβ=-0. 78 ppm/K2 andα23=1. 31 ppm/K for x=0. 30). These values are as low as those of manganin currently used as a standard-resistor material.
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