Abstract

In the present work, GdMnO₃ samples were synthesized by acetate precursor based modified sol–gel method with different sintering temperatures. XRD was performed to understand the structural properties of the samples which imply that samples possess single phasic nature with orthorhombic structure. UV–vis absorption spectrum was analyzed using Tauc’s relation which gives a direct band gap of ∼ 0.98 eV for the GdMnO₃ sample sintered at 1100 °C. Variation in dielectric and impedance with sintering temperature has been discussed in the context of oxygen vacancies and ZDE mechanism.

中文翻译：

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溶胶-凝胶生长的纳米结构GdMnO3的电学性质研究

摘要

在目前的工作中，GdMnO ₃样品是通过基于乙酸前体的改良溶胶-凝胶法在不同的烧结温度下合成的。进行XRD可以了解样品的结构特性，这意味着样品具有正交相结构的单相性质。使用Tauc关系式分析了UV-vis吸收光谱，对于1100°C烧结的GdMnO ₃样品，其直接带隙为〜0.98 eV 。介电常数和阻抗随烧结温度的变化已在氧空位和ZDE机制的背景下进行了讨论。