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Influence of neutron and heavy-ion irradiation on EPR spectra of CuGeO3

机译：中子和重离子辐照对CuGeO3 EPR谱的影响

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The influence of neutron and heavy-ion irradiation on the electron paramagnetic resonance (EPR) spectra of the spin-Peierls compound CuGeO3 has been investigated in the wide temperature range of 2-300 K. It is found that the neutron irradiation leads to a decrease of the spin-Peierls transition temperature and induces appreciable changes in the EPR signal intensity, resonance line width and g-factor of this material. These changes may be associated with a partial suppression of both the energy gap and dimerization within the Cu chains due to the irradiation-induced changes in the topological and chemical short-range order. In contrast to this, the heavy-ion irradiation induces only an increase in the intensity of the EPR signal and does not produce appreciable changes in the resonance line width, g-factor and spin-Peierls transition temperature. The experimental results show a large increase in the Curie-Weiss component and complete suppression of the spin-Peierls transition for higher irradiation doses. [References: 9]
机译：在2-300 K的宽温度范围内，研究了中子和重离子辐照对自旋-Peierls化合物CuGeO3的电子顺磁共振（EPR）光谱的影响。发现中子辐照会降低自旋-Peierls转变温度的变化，并引起该材料的EPR信号强度，共振线宽度和g因子的明显变化。这些变化可能与由于辐照引起的拓扑和化学短程顺序变化而部分抑制Cu链内的能隙和二聚化有关。与此相反，重离子辐照仅引起EPR信号强度的增加，而不会在共振线宽度，g因子和自旋Peierls转变温度上产生明显的变化。实验结果表明，对于较高的辐射剂量，居里-魏斯成分大量增加，并完全抑制了自旋-Peierls跃迁。 [参考：9]

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