Electron Paramagnetic Resonance;
DPPH;
Spin Chain;
Resonance Mode;
Resonant Mode;
D O I:
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摘要:
We report the anomalous effect of the polarization dependence of electron paramagnetic resonance absorption in CuGeO3 doped with 2% of Co. While the resonance line of Cu2+ chains is independent of the microwave polarization in the Faraday geometry, the resonant mode of Co impurity exhibits a strong polarization dependence for all directions of the external magnetic field. Possible reasons of such behavior are discussed.