This paper reports the temperature- and field-dependent magnetic properties of monovalent-doped polycrystalline sample $$\hbox {Gd}_{0.85}\hbox {Li}_{0.15}\hbox {MnO}_{3}$$ (GLMO) prepared by conventional solid-state reaction route. Final sintering at 1673 K for 18 h yields in the formation of well-grown, impurity phase free, single-phased, orthorhombic structured (with Pbnm space group) crystal. The optical properties have been investigated by UV-absorption spectra. The room temperature UV-absorption spectrum using Tauc’s formula gives an optical band gap of$${\sim }$$3.12 eV. The paramagnetic (PM) state to incommensurate antiferromagnetic (ICAFM) state transition temperature increases due to Li doping. Magnetic hysteresis curve at 5 K signifies the Gd spin ordering.

中文翻译：

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单价 $$(\hbox {Li}^{+1})$$(Li+1) 在多铁性 $$\hbox {GdMnO}_{3}$$GdMnO3 中的掺杂效应

本文报道了单价掺杂多晶样品 $$\hbox {Gd}_{0.85}\hbox {Li}_{0.15}\hbox {MnO}_{3}$$ ( GLMO) 通过常规固态反应路线制备。在 1673 K 下最终烧结 18 小时，形成生长良好、无杂质相、单相、正交结构（具有 Pbnm 空间群）晶体。通过紫外吸收光谱研究了光学性质。使用 Tauc 公式的室温紫外吸收光谱给出了 $${\sim }$$$3.12 eV 的光学带隙。由于锂掺杂，顺磁 (PM) 状态到不相称的反铁磁 (ICAFM) 状态转变温度增加。5 K 处的磁滞曲线表示 Gd 自旋排序。