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首页> 外文期刊>Physica, B. Condensed Matter >Evolution of the optical, magnetic and morphological properties of PVA films filled with CuSO_4
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Evolution of the optical, magnetic and morphological properties of PVA films filled with CuSO_4

机译：填充CuSO_4的PVA薄膜的光学，磁性和形貌特性的演变

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摘要

Polyvinylalcohol (PVA) films filled with different concentrations of CuSO_4 were prepared by casting method. The optical, magnetic and morphological properties of these films were intensively investigated in this study. The optical absorption spectra were performed. The assignment of the main absorption peaks was done. The optical parameters such as the absorption coefficient, the electronic band structure, the band tail and the energy gap were estimated. The characteristic features of the electron paramagnetic resonance (EPR) spectra were discussed. The dependence of the g values, the hyperfine coupling constant, the peak to peak linewidth, the number of paramagnetic centres and the asymmetry ratio on filling were studied. The morphology of the polymeric films demonstrated structural modifications with filling. A correlation between the optical, magnetic and morphological properties was accomplished. Three types of Cu~2 were depicted in this study and were accompanied by three regions of filling, low and high FLs as well as an intermediate one, of interesting physical properties. The studied samples revealed significant changes of the physical properties with filling. This indicated the high sensitivity of these samples to filling and suggested their applicability in magnetic and optical devices.
机译：通过流延法制备了填充有不同浓度的CuSO_4的聚乙烯醇（PVA）薄膜。在这项研究中，对这些薄膜的光学，磁学和形态学特性进行了深入研究。进行光吸收光谱。完成了主要吸收峰的分配。估算了光学参数，如吸收系数，电子能带结构，能带尾和能隙。讨论了电子顺磁共振（EPR）光谱的特征。研究了g值，超精细耦合常数，峰到峰线宽，顺磁中心数和不对称率对填充的依赖性。聚合物膜的形态显示出填充时的结构改变。实现了光学，磁学和形态学特性之间的相关性。在这项研究中描述了三种类型的Cu〜2，并伴随着三个填充区域，低和高FL，以及一个中间区域，这些区域具有有趣的物理特性。所研究的样品显示出填充后物理性能的显着变化。这表明这些样品对填充具有很高的敏感性，并暗示了它们在磁性和光学设备中的适用性。

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