Herein, we report La₁.₉₅Y₀.₀₅NiMnO₆ and La_1.9Sm_0.05Y_0.05NiMnO₆ double perovskite multiferroic materials synthesized by solid-state reaction technique, which are XRD characterized for structural and phase formation studies. Rietveld refinement of XRD diffraction data infers that the samples are highly crystalline and have acquired the monoclinic structure (P 1 21/n 1). The analysis of Williamson-Hall’s plot revealed that both the samples have acquired higher crystallite size and higher tensile strain. The Raman modes at around 540–665 cm⁻¹ presented anti-symmetric stretching and symmetric stretching modes, respectively confirming monoclinic phase. Isothermal dielectric constant study in the temperature range of 300–100 K with applied ac field varying from 100 Hz to 2 MHz infer that these samples exhibit good dielectric constant with lower loss values. Semiconducting nature of the double perovskites under observation, was verified by magnetic field dependent electrical (dc) resistivity exploiting four-probe technique. Low magnetic moment was observed with linear nature for field values in both positive and negative directions carried out at room temperature. The polarization (P–E loops) study of both the samples show their lossy nature.

在此，我们报告La ₁。₉₅是₀。通过固态反应技术合成的₀₅ NiMnO ₆和 La _1.9 Sm _0.05 Y _0.05 NiMnO ₆双钙钛矿多铁性材料，通过 XRD 表征结构和相形成研究。XRD 衍射数据的 Rietveld 细化推断样品是高度结晶的并且已获得单斜晶结构 (P 1 21/n 1)。对 Williamson-Hall 曲线的分析表明，这两个样品都获得了更高的微晶尺寸和更高的拉伸应变。540-665 cm ^-1附近的拉曼模式提出了反对称拉伸和对称拉伸模式，分别证实了单斜相。等温介电常数研究在 300-100 K 的温度范围内，施加的交流场从 100 Hz 到 2 MHz 不等，推断这些样品表现出良好的介电常数和较低的损耗值。观察下的双钙钛矿的半导体性质通过利用四探针技术的磁场相关电 ( dc ) 电阻率进行了验证。对于在室温下进行的正向和负向场值，观察到具有线性性质的低磁矩。两个样品的极化（P - E环）研究显示了它们的有损性质。