Analysis of LiKSO4 crystals in the temperature range from 573 to 943 K
The structural phases observed in LiKSO4 crystals due to thermotropic transitions have been studied for more than a century. Nowadays many different phases are referenced, but some of the results are still controversial. Structural studies by single-crystal X-ray diffraction from room temperature to 803 K are presented here. Phase II (708 < T < 943 K) is extensively discussed on the basis of ordered and disordered models, using harmonic and anharmonic atomic displacements, and considering a twinned crystal composed of three orthorhombic domains. Analyses of the same phase at different temperatures determine the best structure model. [References: 36] 36
Keywords: Lithium potassium-sulfate. X-ray. Phase-transitions. Incommensurate phase. Neutron-diffraction. Kliso4. Na2so4(i). Motion. ; Physical Chemistry/Chemical Physics in Current Contents(R)/Physical ; Chemical & Earth Sciences. 2000 week 36 Reprint available from: Pinheiro CB. Univ Fed Minas Gerais ; Icex ; Dept Fis ; BR-30123970 Belo Horizonte ; MG ; Brazil.
English Article Current Contents(R)/Physical, Chemical & Earth Sciences. Reprint available from: Pinheiro CB Univ Fed Minas Gerais, Icex, Dept Fis BR-30123970 Belo Horizonte MG Brazil Univ Fed Minas Gerais, Icex, Dept Fis BR-30123970 Belo Horizonte MG Brazil Univ Lausanne, Inst Cristallog, BSP CH-1015 Lausanne Switzerland 0010 Acta Crystallogr. Sect. B-Struct. Sci
Record created on 2006-03-07, modified on 2016-08-08