Magnetization and Spin Correlation of Two-Dimensional Triangular Antiferromagnet LuFe_2O_4
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概要
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Magnetization, neutron diffraction and Mossbauer measurements have been performed on a two dimensional (2D) double-layered triangular antiferromagnet LuFe^<3+>Fe^<2+>O_4 single crystal. Two magnetic rods (0, 1, l) and (1/3, 1/3, l) with broad widths across them reveal that 2D magnetic ordering is not of long range and no 3D one occurs down to 4.2 K in contrast to an ordinary magnetic system. Thermoremanent magnetization measurements suggest that the system consists of various size ferrimagnetic clusters. The characteristic profile of l-scan in (0, 1, l) can be realized by taking account of correlation among clusters for intra double-layers and inter double-layers. The temperature variations of intensity in magnetic scattering can be explained qualitatively by assuming unequal exchange interactions among three sublattice.
- 社団法人日本物理学会の論文
- 1993-05-15
著者
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Nakagawa Yasuaki
Institute for Materials Research, Tohoku University
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Funahashi Satoru
Jaeri Tokai
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Funahashi S
Japan Atomic Energy Res. Inst. Ibaraki
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KIMIZUKA Noboru
National Institute for Research in Inorganic Materials
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Iida Junji
Department of Physics, Faculty of Science, Ochanomizu University
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Tanaka Midori
Department of Physics, Faculty of Science, Ochanomizu University
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Funahashi Satoru
Japan Atomic Energy Research Institute
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Takekawa Shunji
National Institute for Research in Inorganic Materials
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Iida J
Department Of Physics Faculty Of Science Ochanomizu University
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Iida Junji
Faculty Of Sciences Ochanomizu University
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Iida Junji
Department Of Physics Faculty Of Science Ochanomizu University
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Takekawa S
National Inst. For Materials Sci. Ibaraki Jpn
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Takekawa Shunji
Advanced Materials Laboratory National Institute For Materials Science
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Takekawa Shunji
National Institute For Research In Inorganec Materials
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Tanaka Midori
Department Of Cardiology The Cardiovascular Institure Hospital
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Nakagawa Y
Tohoku Univ. Sendai
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Nakagawa Y
Himeji Inst. Technol. Ako‐gun
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Nakagawa Y
Institute For Materials Research Tohoku University
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Nakagawa Yasuaki
Department Of Electronics Tohoku Institute Of Technology
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Iida Junji
Department Of Physics Ochanomizu University
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Nakagawa Yasuaki
Institute For Material Research Tohoku University
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Kimizuka N
National Institute For Research In Inorganic Materials
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Nakagawa Yasuaki
The Research Institute For Iron Steel And Other Metals Tohoku University
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Takekawa Shunji
National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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TANAKA Midori
Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine
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