Structural, Optical, and Magnetic Studies of Gel Combustion-Derived Sr₂CrMnO₆: A Novel Low-Temperature Ferromagnet

This paper explores a newly created double perovskite substance named Sr₂CrMnO₆ (SCMO), produced using a gel combustion method. The research delves into the material’s structural, optical, and magnetic characteristics. The material’s purity and the development of a monoclinic structure with space group P2₁/n1 (#14) were verified using Rietveld refinement of the X-ray diffraction pattern. The material’s band gap, determined to be 2.5 eV through UV-Vis spectroscopy and Tauc plot analysis, indicates its potential for optoelectronic applications. At room temperature, SCMO displays paramagnetic behavior and a ferromagnetic Curie temperature of approximately 250 K, suggesting its suitability for applications in low-temperature spintronics.