Observation of Magnetic Transition in Quantum Nanomagnet Mn_4Br
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概要
- 論文の詳細を見る
The magnetization of the polycrystalline manganese cluster Mn_4Br was measured down to 0.13 K under a magnetic field of ±15 kOe. It shows a gradual drop at around 1.5 K and the heat capacity measurement at 0 kOe reveals a sharp anomaly at 1.33 K, indicating the occurrence of a second-order antiferromagnetic (AFM) phase transition. The M-H curve well below the transition temperature T_N shows a step around 2.5 kOe, which probably corresponds to the transition from the AFM phase to metamagnetic (MM) phase. The observed field agrees with that estimated from T_N for the MM transition, using a simple molecular field theory. This is the first observation of a well-defined AFM and also a MM phase among the many manganese clusters with a high-spin ground state that function as molecular nanomagnets.
- 社団法人日本物理学会の論文
- 2002-02-15
著者
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GOTO Tsuneaki
The Institute for Solid State Physics, University of Tokyo
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MITAMURA Hiroyuki
The Institute for Solid State Physics,The University of Tokyo
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Christou George
Department Of Chemistry And Molecular Structure Center Indiana University
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Awaga Kunio
Department Of Chemistry Graduate School Of Science University Of Nagoya
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Awaga Kunio
Department Of Chemistry Graduate School Of Science Nagoya University
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Awaga Kunio
Department Of Basic Science Graduate School Of Arts And Sciences The University Of Tokyo
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MORI Nobuo
The Institute for Solid State Physics,The University of Tokyo
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Hendrickson David
Department Of Chemistry And Biochemistry-0358 University Of California At San Diego
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NAKANO Motohiro
Department of Materials Science and Processing, Faculty of Engineering, Osaka University
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Goto Tsuneaki
The Institute For Solid State Physics The University Of Tokyo
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Mitamura Hiroyuki
The Institute For Solid State Physics The University Of Tokyo
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YOO Jae
Department of Chemical Engineering, Chung-Ang University
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YAMAGUCHI Akira
The Institute for Solid State Physics, The University of Tokyo
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KUSUMI Nobuhiro
The Institute for Solid State Physics, The University of Tokyo
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ISHIMOTO Hidehiko
The Institute for Solid State Physics, The University of Tokyo
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Mori N
The Institute For Solid State Physics The University Of Tokyo
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Kusumi Nobuhiro
The Institute For Solid State Physics The University Of Tokyo
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Nakano Motohiro
Department Of Molecular Chemistry Graduate School Of Engineering Osaka University
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Nakano Motohiro
Department Of Applied Chemistry Graduate School Of Engineering Osaka University
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Ishimoto Hidehiko
The Institute For Solid State Physics The University Of Tokyo
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Mori Nobuo
The Institute For Solid State Physics The University Of Tokyo
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Yoo Jae
Department Of Chemistry And Biochemistry-0358 University Of California At San Diego
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Yoo Jae
Department Of Chemical Engineering Chung-ang University
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Yamaguchi Akira
The Institute For Solid State Physics The University Of Tokyo
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NAKANO Motohiro
Department of Anesthesiology, The Nippon Dental University School of Dentistry at Niigata
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