Open AccessКолебательные спектры ионно-молекулярных кристаллов карбонатов в предпереходной области вблизи структурных фазовых переходов
Author(s) -
А.Р. Алиев,
И.Р. Ахмедов,
М.Г. Какагасанов,
З.А. Алиев
Publication year - 2019
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/os.2019.09.48196.104-19
Subject(s) - lithium carbonate , carbonate , raman spectroscopy , potassium carbonate , sodium carbonate , phase (matter) , lithium (medication) , chemistry , chemical engineering , phase transition , materials science , inorganic chemistry , sodium , organic chemistry , thermodynamics , ion , physics , medicine , engineering , ionic bonding , optics , endocrinology
Molecular relaxation processes in lithium carbonate (Li2CO3), sodium carbonate (Na2CO3) and potassium carbonate (K2CO3) were studied by Raman spectroscopy. It has been established that in crystalline carbonates Li2CO3, Na2CO3 and K2CO3, the structural phase transition of the first kind is stretched (diffuse phase transition). The existence of the pretransition region in the studied carbonates Li2CO3, Na2CO3 and K2CO3 was found.