Infrared and raman investigations of the charge ordering phenomena in the monoclinic salts κ-(BEDT-TTF)4[M(CN)6][N(C2H5)4]·2H2O (M=CoIII, FeIII) |
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| Authors: | R. Świetlik A. Łapiński M. Połomska L. Ouahab A. Ota |
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| Affiliation: | (1) Institute of Molecular Physics, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland;(2) LCSIM, UMR 6511-CNRS, Université Rennes-1, 35042 Rennes, France |
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| Abstract: | The monoclinic crystals of κ-phase charge-transfer salts formed by BEDT-TTF with Co(CN)6 or Fe(CN)6 anions undergo a phase transition at T=150 K. Temperature dependences of FT-NIR Raman spectra and IR reflectance spectra were studied. We show that the phase transition is related to a charge ordering and there exist charge fluctuations above 150 K. |
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