A Comparison Study on Structural Properties in La_0.7Ca_0.2Sr₀.₁MnO₃ Compound Synthesized by Solid-State, Sol-Gel, and Wet-Mixing Methods

In this research, we have tried to investigate the effects of the synthesis methods on structural properties in La_0.7Ca_0.2Sr_0.1MnO₃ compound synthesized using solid-state, sol-gel, and wet-mixing methods. All samples were measured with several measurements, such as X-ray diffraction (XRD), scanning electron microscope-energy dispersive X-ray (SEM-EDX), and Fourier transform infrared spectroscopy (FTIR). Our XRD analysis reveals a single phase without impurity and confirms the presence of orthorhombic structures with Pnma space group. Additionally, the average crystal size of La_0.7Ca_0.2Sr_0.1MnO₃ compound by using solid-state, sol-gel, and wet-mixing methods exhibits values of 112.51, 91.33, and 88.75 nm. For the morphological structure analysis, we have carried out SEM analysis, which shows a decreasing value of grain size average of 1.70, 0.91, and 0.81 μm for solid-state, sol-gel, and wet-mixing methods samples, respectively, which have a similar trend with values of the average crystal size. The FTIR measurement confirms the presence of the internal bending mode of MnO₆ and asymmetric stretching mode of MnO6 at a band around 518.16 - 524.24 and 548.68 - 616.57 cm^-1, respectively.