Abstract Structural, magnetic and dielectric properties have been studied for Yb 2 CoMnO 6 . Nano-crystalline sample of Yb 2 CoMnO 6 synthesized by sol–gel method and structural analysis shows that the sample crystallizes in monoclinic crystal structure with P2 1 /n phase group. To understand the charge state of Co, Mn and Yb we have performed the XPS study. Magnetic study shows that the sample undergoes a paramagnetic to ferromagnetic phase transition around T c ∼ 56 K and an additional magnetic ordering at a lower temperature around 14 K due to ordering of Yb 3 + magnetic ions. Temperature dependent Raman study reveals that spin–phonon interaction is present in this material. Further, we have studied the dielectric properties of this material. We observed that the material shows a relaxation behavior that obeys the thermally activated relaxation mechanism. Impedance spectroscopy reveals that the material shows non-Debye’s behavior. AC conductivity study is performed to understand the conduction mechanics which involve the quantum mechanical tunneling phenomenon.

中文翻译：

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纳米晶 Yb2CoMnO6 的结构、磁性和介电性能

摘要 研究了Yb 2 CoMnO 6 的结构、磁性和介电性能。通过溶胶-凝胶法合成的Yb 2 CoMnO 6 纳米晶样品和结构分析表明，样品结晶为具有P2 1 /n相组的单斜晶体结构。为了了解 Co、Mn 和 Yb 的电荷状态，我们进行了 XPS 研究。磁性研究表明，由于 Yb 3 + 磁性离子的有序化，样品在 T c ∼ 56 K 附近经历了顺磁性到铁磁性的相变，并在 14 K 附近的较低温度下经历了额外的磁性有序化。温度相关的拉曼研究表明，这种材料中存在自旋-声子相互作用。此外，我们研究了这种材料的介电特性。我们观察到材料表现出遵循热激活弛豫机制的弛豫行为。阻抗谱显示该材料表现出非德拜行为。进行交流电导率研究以了解涉及量子力学隧穿现象的传导力学。