X-ray diffraction studies of crystal structures and phase transitions in K1−x(NH4)xCl mixed salts

Author

Batdemberel, G. ; Fuess, Hartmut ; Munkhbaatar, P. ; Chadraabal, Sh

Author_Institution

Sch. of Mater. Sci., Mongolian Univ. of Sci. & Technol., Ulaanbaatar, Mongolia

Volume

1

fYear

2011

fDate

22-24 Aug. 2011

Firstpage

45

Lastpage

48

Abstract

Crystal structures and phase transitions of K_1-x (NH₄)_xCl mixed salts with non-stoichiometric composition x=0.1, 0.2, 0.5, 0.6 and 0.8 have been studied by x-ray diffraction technique. It was established that at the room temperature K_0.8(NH₄)_0.2Cl and K_0.9(NH₄)_0.1Cl compounds have Fm3̅m symmetry and K_0.2(NH₄)_0.8Cl compound has Pm3m, when K_0.5(NH₄)_0.5Cl and K_0.4(NH₄)_0.6Cl compounds consist of two phases with space groups Fm3̅m + Pm3m. Lattice parameters, positions and thermal factors of K, N and CI atoms have been refined using x-ray diffraction study for each mixed crystals.

Keywords

X-ray diffraction; ammonia; crystal structure; lattice constants; mixing; potassium compounds; solid-state phase transformations; space groups; stoichiometry; Fm3̅m symmetry; K_0.8(NH₄)_0.2Cl; K_0.9(NH₄)_0.1Cl; X-ray diffraction; crystal structure; lattice parameters; mixed salt crystals; nonstoichiometry; phase transitions; space groups; temperature 293 K to 298 K; thermal factors; Compounds; Ions; crystal structure; mixed salt; phase transition; x-ray diffraction;

fLanguage

English

Publisher

ieee

Conference_Titel

Strategic Technology (IFOST), 2011 6th International Forum on

Conference_Location

Harbin, Heilongjiang

Print_ISBN

978-1-4577-0398-0

Type

conf

DOI

10.1109/IFOST.2011.6020961

Filename

6020961