Nuclear Quadrupole Resonance of Cu in the Paramagnetic State of CuO
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概要
- 論文の詳細を見る
The "Cu nuclear quadrupole resonance (NQR) technique has been utilized to investigate the dynamical properties of Cu0 in paramagnetic states. The NQR frequency increases linearly with increasing temperature. The spiut-lattice relaxation rate1 / T. asymptotically approaches a constant valtue 1 / T,. of 1.16 * 0.02 X 10' sec ' athigh temperatures. Below about 350 K, the rate begins to incre?tse, and near the Neeltemperature of 229 - 230 K, it diverges due to the critical slowing down. The criticalregion is found to be not very wide ((7' - T.) / T.< 0.5). An estit-mated value for 1 / T..,in terms of exchange coupled local moments is in good agreemettt with the experirnen-tal value. From the viewpoint of the spin-lattice relaxation experuments, CuO appearsto be a well-localized magnetic insulator.
- 社団法人日本物理学会の論文
- 1990-04-15
著者
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UEDA Yutaka
Institute for Solid State Physics, University of Tokyo
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YASUOKA Hiroshi
Institute for Solid State Physics,University of Tokyo
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Ueda Yutaka
Institute For Solid State Physics University Of Tokyo
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Shimizu T
National Institute For Materials Science
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Imai Takashi
放射線医学総合研究所フロンティア研究センター 放射線感受性遺伝子プロジェクト
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Imai Takashi
University Of Tokyo
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Itoh Y
Shizuoka Univ. Shizuoka
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Itoh Y
Superconductivity Research Laboratory International Superconductivity Technology Center
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ITOH Yutaka
Institute for Solid State Physics,University of Tokyo
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IMAI Takashi
Institute for Solid State Physics,University of Tokyo
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SHIMIZU Tadashi
Institute for Solid State Physics,University of Tokyo
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TSUDA Toshinobu
Department of Natural Science,Faculty of Education,Saitama University
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Yasuoka Hiroshi
Institute For Chemistry Research Kyoto University
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Tsuda T
Institute For Solid State Physics University Of Tokyo
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Tsuda Toshinobu
Department Of Metal Science And Technology Kyoto University
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Shibuya T
Univ. Tokyo Tokyo Jpn
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Shimizu Tadashi
Institute For Solid State Physics University Of Tokyo
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Imai T
Rf Heating Laboratory Naka Fusion Research Establishment Japan Atomic Energy Research Institute
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Itoh Yutaka
Institute For Solid State Physics The University Of Tokyo
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Yasuoka Hiroshi
Institute Fo Solid State Physics University Of Tokyo
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Ueda Yutaka
Institute For Solid State Physic The University Of Tokyo
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Imai Takashi
Institute For Solid State Physics The University Of Tokyo
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Itoh Yutaka
Department of Material Science, Faculty of Science, Kochi University
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