Magnetic Properties and Heavy Electronic States in the Antiferromagnet NpPtGa_5(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
- 論文の詳細を見る
We succeeded in growing a new neptunium compound NpPtGa_5 by the Ga-flux method, and measured the electrical resistivity, specific heat, magnetic susceptibility, magnetization and de Haas-van Alphen (dHvA) effect. NpPtGa_5 orders antiferromagnetically below T_N=26K. The magnetic moment is most likely directed along the [100] direction. A cylindrical Fermi surface was detected by the dHvA experiment in the antiferromagnetic state. The cyclotron masses are large, 17-21m_0, indicating the heavy electronic state in NpPtGa_5. The large cyclotron masses are consistent with the large electronic specific heat coefficient, γ=123mJ/(K^2・mol), which is the largest among NpTGa_5 (T=Fe, Co, Rh, Ni, and Pt).
- 社団法人日本物理学会の論文
- 2006-11-15
著者
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AOKI Dai
Institute for Materials Research, Tohoku University
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HOMMA Yoshiya
Institute for Materials Research, Tohoku University
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YAMAMOTO Etsuji
Advanced Science Research Center, Japan Atomic Energy Research Institute
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NAKAMURA Akio
Advanced Science Research Center, Japan Atomic Energy Research Institute
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HAGA Yoshinori
Advanced Science Research Center, Japan Atomic Energy Research Institute
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ONUKI Yoshichika
Advanced Science Research Center, Japan Atomic Energy Research Institute
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SHIOKAWA Yoshinobu
Institute for Materials Research, Tohoku University
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SETTAI Rikio
Graduate School of Science, Osaka University
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Aoki Dai
Institute For Materials Research Tohoku University
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Nakamura A
Advanced Science Research Center Japan Atomic Energy Agency
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Oda Yasukage
Gradnate School Of Science Osaka University
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Onuki Yoshichika
Institute Of Materials Science The University Of Tsukuba
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Aoki D
Institute For Materials Research Tohoku University
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Haga Yoshinori
Advanced Science Research Center Japan Atomic Energy Research Institute
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Yamamoto Etsuji
Advanced Science Research Center Japan Atomic Energy Agency
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Shiokawa Yoshinobu
Institute For Materials Research Tohoku University
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Homma Yoshiya
Institute For Materials Research Tohoku University
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Nakamura Akio
Advanced Science Research Center Japan Atomic Energy Agency
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Nomachi Akiko
Division Of Physics Graduate School Of Science Hokkaido University
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