Abstract
This study was focused on the optical-vibrational analysis and high-pressure Raman-scattering spectroscopy of La(Fe,Mo)0.5O3 ceramics at room temperature. This material was fabricated by using the sol-gel method. The element composition was checked by X-ray Fluorescence confirming the atomic ratio of La, Fe and Mo. Fourier Transform Infrared spectroscopy confirmed the (Fe/Mo −O) bonding vibration which is typical perovskite structure. The band gap energy investigated by UV-Vis spectra was found to be 2.03 eV. At room temperature, the Raman scattering spectra under high pressure was characterized by the Raman-scattering spectrum in the range of 0.90 to 16.7 GPa. The high-pressure Raman scattering confirmed the structural transition after the pressure surpasses 7.0 GPa. From this phenomena, it well indicates the lattice structure stability is still preserved under 7.0 GPa.
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