Single-phase samples of InCr1−xTixO3+x/2 with x = 3/4, 5/7 and 2/3 compositions were synthesized by the solid-state reaction method, and optical, dielectric and magnetic properties were explored for the first time. Crystal structure analysis showed a complete Cr3+/Ti4+ solubility, and the monoclinic crystal structure was successfully characterized. The optical bandgap was obtained by both Kubelka–Munk function and Tauc plot method. The Cr3+/Ti4+ composition has a little effect in the direct bandgap taking values of 2.09 eV for x = 3/4 and 1.97 eV for x = 2/3, respectively. We found that the permittivity shows a peak strongly dependent on the frequency, which is typical of relaxor behavior. In addition, the relaxor peak is dependent on the Cr3+/Ti4+ composition. The AC conductivity analysis showed that main charge carriers to participate in the electric conductivity are associated with small polarons with Eact ~ 0.40 eV. Diluted magnetic or paramagnetic behavior was found in the magnetization studies. Accordingly, we found that the compositional disordered Cr3+/Ti4+ cations randomly distributed among equivalent sites into Cr/Ti–O layer explain both the dielectric relaxor and magnetic features.

中文翻译：

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InCr1−xTixO3+x/2 (x = 3/4, 5/7 and 2/3) 固溶体的介电和磁性能

采用固相反应法合成了x=3/4、5/7和2/3组成的InCr1−xTixO3+x/2单相样品，并首次探索了其光学、介电和磁性能. 晶体结构分析表明Cr3+/Ti4+完全溶解，成功表征了单斜晶体结构。光学带隙是通过 Kubelka-Munk 函数和 Tauc 绘图方法获得的。Cr3+/Ti4+ 成分对直接带隙的影响很小，x = 3/4 时取值为 2.09 eV，x = 2/3 时取值分别为 1.97 eV。我们发现介电常数显示出一个强烈依赖于频率的峰值，这是典型的弛豫行为。此外，弛豫峰取决于 Cr3+/Ti4+ 成分。交流电导率分析表明，参与电导率的主要电荷载流子与 Eact ~ 0.40 eV 的小极化子相关。在磁化研究中发现了稀释的磁性或顺磁性行为。因此，我们发现成分无序的 Cr3+/Ti4+ 阳离子随机分布在等效位点之间进入 Cr/Ti-O 层，解释了介电弛豫和磁性特征。