Structure Analysis of Mixed Crystals, $LiK_{1-x}Rb_{x}SO_{4}(x=0.1,\;0.2)$

$LiK_{1-x}Rb_{x}SO_{4}(x=0.1,\;0.2)$의 결정구조 분석

  • Kim, Jin-Gyu (Division of Electron Microscopic Research, Korea Basic Science Institute) ;
  • Kim, Youn-Joong (Division of Electron Microscopic Research, Korea Basic Science Institute) ;
  • Kim, Hae-Jin (Frontier Research Laboratory, Korea Basic Science Institute) ;
  • Suh, Il-Hwan (Department of Material Chemistry, Korea University)
  • 김진규 (한국기초과학지원연구원 전자현미경연구부) ;
  • 김윤중 (한국기초과학지원연구원 전자현미경연구부) ;
  • 김해진 (한국기초과학지원연구원 미래융합연구부) ;
  • 서일환 (고려대학교 신소재화학과)
  • Published : 2005.12.31

Abstract

[ $LiK_{1-x}Rb_{x}SO_{4}(x=0.1,\;0.2)$ ] crystals were grown by means of aqueous solution growth technique at 313 K. Structure analysis of them was carried out with space group $P6_{3}(#173)$ by X-ray diffraction. In these compounds, the Li and $SO_{4}^{2-}$ ions lying on the three-fold axes formed infinite three-dimensional network and K and Rb atoms located on the six-fold axes are coordinated by twelve and fifteen O atoms respectively. The most suitable stabilization was achieved when the occupancy factors of K and Rb atoms are (0.91 : 0.09), (0.77 : 0.23) respectively.

[ $LiK_{1-x}Rb_{x}SO_{4}(x=0.1,\;0.2)$ ]의 결정을 313K에서 수용액법으로 성장시켰다. 결정구조는 X-ray 회절법을 이용하여 동일한 공간군 $P6_{3}(#173)$에서 수행되었다. 동일한 대칭성을 가진 두 화합물은 각각 3회 회전축에 위치하고 있는 Li과 $SO_{4}^{2-}$ 이온들이 서로 무한히 연결된 3차원적 그물구조를 형성하고 있고, 6회 회전축에 위치하고 있는 K와 Rb원자들은 각각 12개와 15개의 O 원자들과 배위를 이루고 있다. K와 Rb의 점유도는(0.91 : 0.09), (0.77 : 0.23)으로 정밀화 하였을 때 가장 안정된 상태에 도달하였다.

Keywords

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