X-ray diffraction, thermal analysis and Raman spectroscopy characterization of Li(NH4)(1-x)KxSO4 mixex crystals.

Authors
Mata, J Solans, X Calvet, T
Citation
J. Mata et al., X-ray diffraction, thermal analysis and Raman spectroscopy characterization of Li(NH4)(1-x)KxSO4 mixex crystals., B S ESP CER, 38(5), 1999, pp. 451-454
Citations number
6
Categorie Soggetti
Material Science & Engineering
Journal title
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
ISSN journal
03663175 → ACNP
Volume
38
Issue
5
Year of publication
1999
Pages
451 - 454
Database
ISI
SICI code
0366-3175(199909/10)38:5<451:XDTAAR>2.0.ZU;2-O
Abstract
The preparation and characterization of mixed crystals with formula Li(NH4) (1-x)KxSO4 has been carried out. The characterization was by thermal analys is (DSC and ATD), X-ray diffraction on powder and single crystal samples at variable temperature and Raman spectroscopy at variable temperature. Two t ype of phases have been obtained: A solid solution with 0.94 < x < 1, with the same phases to those observed in the LiKSO4, but new phases, which are not shown by the LiKSO4, can be obtained according to the crystallization p rocess. The second type of compounds have the formula Li(NH4)(0.53)K0.47SO4 , with an hexagonal structure (a approximate to 3 a(LiKSO4)). This compound have a phase transition at 463K.