Abstract
We report an investigation of perovskite-type SmScO3 and NdScO3 single crystals by Raman scattering in various scattering configurations and at different wavelengths. The reported Raman spectra, together with the phonon mode assignment, set the basis for the use of Raman scattering for the structural investigation of RE-scandates. Further to the phonon signature, a fluorescence signal is observed for both scandates and is particularly intense for NdScO3 when using a 488 or 514 nm excitation line. A comparison of Raman spectra of RE-scandates with literature Raman data on orthorhombic perovskites shows that the frequency of particular modes scales with the orthorhombic distortion in terms of the rotation (or tilt) angle of the ScO6 octahedra
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