Abstract The polycrystalline compound Ho2CoMnO6 was synthesized by the conventional solid-state process. Its structure has been solved by X-ray powder diffraction (XRD) indicating that this double perovskite adopts a monoclinic structure with the space group P21/n. The fundamental optical properties were extracted using UV–visible measurements. The optical absorption is obtained around 590 nm and a direct optical bandgap energy of 2.37 eV. Using the spin wave theory (SWT), the thermal magnetization curve was satisfactory modeled at low temperature, in which several fundamental magnetic parameters were obtained. The transport properties of the Ho2CoMnO6 compound, was also studied.

中文翻译：

---

双钙钛矿Ho2CoMnO6纳米颗粒的自旋波、光和电传输研究

摘要 采用常规固相工艺合成了多晶化合物Ho2CoMnO6。其结构已通过 X 射线粉末衍射 (XRD) 解析，表明该双钙钛矿采用空间群为 P21/n 的单斜结构。使用紫外-可见光测量提取基本光学特性。光吸收在 590 nm 附近获得，直接光带隙能量为 2.37 eV。使用自旋波理论（SWT），热磁化曲线在低温下得到了令人满意的建模，其中获得了几个基本的磁参数。还研究了 Ho2CoMnO6 化合物的传输特性。