Crystal structure of fluorite-related Ln3SbO7 (Ln=La-Dy) ceramics studied by synchrotron X-ray diffraction and Raman scattering

Raman spectrum for La3SbO7 ceramics showing their 22 phonon modes adjusted through Lorentzian lines. According to synchrotron X-ray diffraction and Raman scattering, this material belongs to the space group Cmcm.