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We report and analyze Raman spectra recorded on crystals of LiH2PO4 (LDP) and KLi(H2PO4)2 (KLDP). We provide a new and complete assignment of Raman lines in both crystals from their behavior as function of temperature. Among internal vibrations, we discern the modes within PO4 tetrahedra, the modes related to LiO bonds, and those due to the OH vibrations. In the wavenumber range between 300 and...
A Raman spectroscopy study has been performed, at room temperature, on the (Bi0.5Na0.5)0.92Ba0.08‐3x/2LaxTiO3 lead‐free ceramic system (with x = 0, 1, 2, and 3 at.% La). The signature of the Raman spectra showed that the structural properties were noticeably affected by the La3+‐ions concentration, revealing the coexistence of two phases for the studied compositions. The structural properties showed...
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