| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Research Abstract |
Physical properties of Fe3Mo3N and(Fe1-xCox)_3Mo_3N systems have been studied comprehensively. In this study, a non-Fermi-liquid behavior without any tuning such as physical pressure and/or chemical doping was found for the first time. NFL behavior suggests the existence of quantum critical point in the vicinity of pure Fe_3Mo_3N. Field and substitution induced ferromagnetic phases were found as was expected. The constructed phase diagram is not trivial, suggesting the effect of geometrical frustration inherent in theη-carbide-type compound. Related compound Fe_3W_3N(a ferromagnet TC=110 K) and Fe_6W_6N(an antiferromagnet TN=75 K) were synthesized by HIP method for the first time.
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