Phase transformations in LiH2PO4 (LDP) revealed by Raman spectroscopy

Abstract : We investigate Raman scattering measurements on polycrystalline LiH2PO 4 (LDP) between 30 and 240°C, in order to detect phase transformations. The thermal behavior of main lines in different wavenumber ranges is discussed and analyzed. Raman spectra show two anomalies at 176°C and 210°C, reflecting changes in chemical bonds, and are attributed to progressive polymerization, in agreement with earlier electrical measurements.
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Rawdha Dekhili, T.H. Kauffmann, Hassen Aroui, Marc Fontana. Phase transformations in LiH2PO4 (LDP) revealed by Raman spectroscopy. Solid State Communications, Elsevier, 2018, 279, pp.22-26. ⟨10.1016/j.ssc.2018.04.016⟩. ⟨hal-01803857⟩

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