Influence of Impurities to EPR in Two-Dimensional Antiferromagnet K_2MnF_4

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概要

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• The EPR linewidth and the line shape of impurity-doped two-dimensionalantiferromagnets K.Mn.Mg. .F. (c>0.35) in X-band region were investigatedat room temperature. The minimum of the Iinewidth at a "magic angle" O=55'(0 is the angle of dc field with respect to the c axis of the crystal) was observedindicating the dominancy of (:O diffusive mode in the dipolar interaction. Theline shape at N=0' approaches to Gaussian from nearly Lorentzian decreasing Mncontents. This fact can be explained by the formation of the broken chains ofMn atoms in the crystal. The calculated line shape for Mn chain consisting of30 atoms agrees with the experimental results for c=0.35.The low-temperature line-broadening of the impure two-dimensional systemswas suppressed and the minimum of the width at the "magic angle" did notdisappear even at the lowest temperatures on the contrary to the pure systems.

• 社団法人日本物理学会の論文
• 1979-08-15

著者

• Tanimoto M

  Asahikawa Medical College

• Tanimoto Mitsuho

  Research Institute Of Applied Electricity Hokkaido University

• Tanimoto Mitsuho

  Asahikawa Medical College

関連論文

• Chlorine NMR in the Re-Entrant Spin-Glass State of the Quasi-Two-Dimensional XY System Rb_2Mn_Cr_xCl_4
• Electron-Spin Resonance in Two-Dimensional Impurity-Doped Antiferromagnets K_2Mn_cMg_F_4.II
• NMR Study of Covalency in Ferromagnet Rb_2CrCl_4
• Ferromagnetic Resonance in Cobalt Fine Particles
• Sidebands on EPR Lines in Impurity-Doped Two-Dimensional Systems
• Resonance Shift of ESR Lines Due to Low-Symmetric Spin Distribution in Impure Two-Dimensional Systems K_2Mn_cMg_F_4
• Influence of Impurities to EPR in Two-Dimensional Antiferromagnet K_2MnF_4

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