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Synthesis and characterization of nonconventional nickel-titania glasses by sol-gel route

机译:非常规镍-二氧化钛玻璃的溶胶-凝胶法合成与表征

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Glasses in the NiO--TiO_2 system in the composition range l5 to 25 mol of NiO have been synthesized by the sol-gel technique by heat treatment of the precursor sol at 500 deg. C. The glass structure is built up by crosslinking of two units, namely TiO_6 octahedron and NiO_3 triangle. Glassy structure is confirmed at a microscopic level by scanning electron microscopy. An increase in the values of peak-to-peak width of electron paramagnetic resonance with increasing concentration of Ni_2+ is attributed to an enhanced interaction between neighboring paramagnetic Ni_2+ ions.
机译:通过溶胶-凝胶技术,通过对前体溶胶在500度进行热处理,合成了NiO-TiO_2系统中玻璃的组成范围为15至25 mol NiO。 C.通过交联TiO_6八面体和NiO_3三角形这两个单元来建立玻璃结构。通过扫描电子显微镜在显微镜下确认玻璃状结构。随着Ni_2 +浓度的增加,电子顺磁共振峰-峰宽度值的增加归因于相邻顺磁性Ni_2 +离子之间相互作用的增强。

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