A Study of Structural Properties of CuMn2O4 Synthesized by Solid State Method

Abstract

CuMn₂O₄ was synthesized by Solid State method. MnO₂ and CuO were used as precursors. The temperature of synthesis was 850°C. X-ray diffraction analysis (XRD) revealed that the CuMn₂O₄ was synthesized. XRD results showed that the prepared compound was polycrystalline and had cubic structure. The lattice constant was a=8.359 . The volume of unit cell was V=584.14 A°³. The space group of symmetry was determined from JCPDS data and it was Fd3m. The results show that there are a compressive strain at 750°C and 950°C and tensile strain at 850°C. It was revealed from differential thermal analysis that the physical water was removed at 134.30°C. The thermal characteristic of prepared compound showed that the formation of it starts after (700)°C. DTA data revealed that the 850°C was the optimum degree of synthesis of CuMn₂O₄ which agree with XRD results. the compound decomposes at 950°C.

Keywords: copper manganite (CuMO), mixed oxides, solid state reaction, spinel.