Observation of 1/3 Magnetization-Plateau-Like Anomaly in S=3/2 Perfect Kagomé Lattice Antiferromagnet KCr3(OH)6(SO4)2 (Cr-jarosite)
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概要
- 論文の詳細を見る
Single crystals of the S=3/2 kagomé lattice antiferromagnet KCr3(OH)6(SO4)2 (Cr-jarosite) have been synthesized. Magnetic susceptibility measurement reveals an antiferromagnetic transition at T_{\text{N}}=4.5 K. A weak ferromagnetism with a spontaneous magnetization along the c-axis appears below T_{\text{N}}. High-field magnetization measurement reveals an anomaly at about 1/3 of the saturation magnetization under in-plane magnetic fields, however, the out-of-plane magnetization curve is almost linear. In contrast to ordinary field-induced transitions, the anomaly is less pronounced at lower temperatures. This observation is consistent with the prediction made using the order-by-disorder model on the 1/3 magnetization plateau.
- 2011-06-15
著者
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Kindo Koichi
The Institute For Solid State Physics The University Of Tokyo
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Hara Shigeo
Department Of Materials Science & Technology Nagoya Institute Of Technology
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Sato Hirohiko
Department Of Biotechnology Tokyo University Of Agriculture And Technology
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Narumi Yasuo
Institute For Materials Research Tohoku University
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Narumi Yasuo
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
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Kindo Koichi
The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Okuta Koji
Department of Physics, Chuo University, Bunkyo, Tokyo 112-8551, Japan
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Sato Hirohiko
Department of Physics, Chuo University, Bunkyo, Tokyo 112-8551, Japan
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Hara Shigeo
Department of Physics, Chuo University, Bunkyo, Tokyo 112-8551, Japan
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HARA Shigeo
Department of Dairy Science, The College of Dairying
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