31P Nuclear Magnetic Resonance and 101Ru Nuclear Quadrupole Resonance Measurements of Filled Skutterudites GdRu4P12 and TbRu4P12
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概要
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Filled skutterudites GdRu4P12 and TbRu4P12 exhibit antiferromagnetic ordering below 22 and 20 K, respectively. In TbRu4P12, an additional anomaly exists at around 10 K under a zero field; the origin of this successive transition might be related to multipole ordering. In order to determine the detailed magnetic properties of GdRu4P12 and TbRu4P12, we performed zero-field 31P nuclear magnetic resonance (NMR) and 101Ru nuclear quadrupole resonance (NQR) measurements on them. The zero-field 31P-NMR spectra indicate the occurrence of magnetic transition only at 22 K (GdRu4P12) and 20 K (TbRu4P12). We observed an anomalous temperature dependence of the spin--lattice relaxation rate 1/T_{1} just below 20 K and a small anomaly at around 10 K in the 101Ru-NQR of TbRu4P12. The temperature dependence of 1/T_{1} also indicates that the nesting condition in the ordered states of GdRu4P12 and TbRu4P12 is poorer than that of SmRu4P12.
- 2011-04-15
著者
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Kohori Yoh
Department Of Material Physics Faculty Of Engineering Science Osaka University
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HACHITANI Kenichi
Graduate School of Science and Technology, Chiba University
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AMANUMA Hideaki
Graduate School of Science and Technology, Chiba University
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Shirotani Ichimin
Department Of Applied Science For Energy Muroran Institute Of Technology
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Fukazawa Hideto
Department Of Physics Chiba University
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Kobayashi Ryohei
Department Of Electrical And Electronic Engineering Nagoya Institute Of Technology
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Sekine Chihiro
Department Of Electric And Electronic Engineering Muroran Institute Of Technology
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Shimizu Masahiro
Graduate School of Science and Technology, Chiba University, Chiba 263-8522, Japan
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Komaki Yasuhiro
Department of Physics, Chiba University, Chiba 263-8522, Japan
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Akahira Keita
Department of Electrical and Electronical Engineering, Muroran Institute of Technology, Muroran, Hokkaido 050-8585, Japan
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Hachitani Kenichi
Graduate School of Science and Technology, Chiba University, Chiba 263-8522, Japan
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Sekine Chihiro
Department of Electrical and Electronical Engineering, Muroran Institute of Technology, Muroran, Hokkaido 050-8585, Japan
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Amanuma Hideaki
Graduate School of Science and Technology, Chiba University, Chiba 263-8522, Japan
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