Multi-Sublattice Magnetic Structure of KCuF_3 Caused by the Antisymmetric Exchange Interaction : Antiferromagnetic Resonance Measurements
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概要
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The compound KCuF_3 is known to form antiferromagnetic quantum linear chains in spite of its pseudo-cubic crystal structure, and type-A collinear magnetic ordering with the spins lying in the c-plane has been accepted so far. However, recent electron paramagnetic resonance studies revealed the existence of the Σ_<i>j>d_<ij>・(S_i×S_j) interaction with d_<ij>⊥c-axis between nearest-neighbour spins along the c-axis, but the direction of d_<ij>in the c-plane is still unknown. To clarify the direction of d_<ij>in the c-plane, antiferromagnetic resonance experiments were conducted at 4. 2 K, which is far below T_N= 39 K, using an X-band spectrometer. Analysis of the resonance field having a fourfold symmetric change in the c-plane revealed that d_<ij>⫽[100]_p which are orthogonal to each other in the c-plane . Owing to these d_<ij>, spins are canted in their directions and are divided into eight sublattices.
- 社団法人日本物理学会の論文
- 1994-01-15
著者
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Yamada Isao
Department Of Physics Faculty Of Science Chiba University
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Yamada Isao
Departmen Of Communications And Integrated Systems Tokyo Institute Of Technology
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Kato Naoshi
Department of Physics, Faculty of Science, Chiba University
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Kato N
Department Of Physics Faculty Of Science Chiba University
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Kato Naoshi
Department Of Physics Faculty Of Science Chiba University
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