Thermal Analysis of Freedom of Spin in Partially Disordered State of the Antiferromagnetic Triangular Lattice in CuFeO_2

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概要

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• The partially disordered spins in the triangular anitiferromagnetic lattice in CuFeO_2 have been studied by heat capacity measurements. A cusp and a sharp peak in the heat capacity curve were observed at T_<N1> = 14.0±0.5 K and T_<N2>= 11.0±0.5 K, respectively. The analysis of heat capacity revealed that the magnetic entropy associated with the anomaly in the heat capacity around T_<N2> is attributable to the disordering of one-fifth of Fe^<3+> spins. The present result is discussed in comparison with partially disordered states of CeSb and PrCo_2Si_2, anisotropic spin systems with frustration. The heat capacity cusp around T_<N1> is compared with the characteristic thermal behavior for frustrated spin systems.

• 社団法人日本物理学会の論文
• 1994-06-15

著者

• KAWAE Tatsuya

  Department of Applied Quantum Physics, Kyushu University

• TAKEDA Kazuyoshi

  Department of Applied Quantum Physics, Kyushu University

• MEKATA Mamoru

  Department of Applied Physics,Fukui University

• Yaguchi Nariyasu

  Department of Applied Physics, Faculty of Engineering, Fukui University

• Mekata Mamoru

  Department Of Applied Physics Faculty Of Engineering Fukui University

• Yaguchi Nariyasu

  Department Of Applied Physics Fukui University

• Kawae Tatsuya

  Department Of Applied Quantum Physics Kyushu University

• Hitaka Masako

  Department of Applied Science,Faculty of Engineering,Kyushu University

• Yaguchi Nariyasu

  Department Of Applied Physics Faculty Of Engineering Fukui University

• Miyake Keita

  Department of Applied Science, Faculty of Engineering, Kyushu University

• Miyake Keita

  Department Of Applied Science Faculty Of Engineering Kyushu University

• Takeda Kazuyoshi

  Department Of Applied Quantum Physics Faculty Of Engineering Kyushu University:institute Of Environm

• Mekata Mamoru

  Department of Applied Physics, Fukui University

• Hitaka Masako

  Department of Applied Science, Faculty of Engineering, Kyushu University

• Yaguchi Nariyasu

  Department of Applied Physics, Fukui University

• TAKEDA Kazuyoshi

  Department of Applied Science, Faculty of Engineering, Kyushu University

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