Structural Characterization of Incommensurate Misfit Layer Compound <TEX>$(LaS)_xVS_2(xapprox 1.18)$</TEX>

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J. Korean Ceram. Soc. > Volume 31(6); 1994 > Article

Journal of the Korean Ceramic Society 1994;31(6): 617.

비정합 결정구조를 갖는 $(LaS)_xVS_2(xapprox 1.18)$의 결정구조적 특성연구

조남웅, 유광수, 정형진

한국과학기술원 세라믹스연구부

Structural Characterization of Incommensurate Misfit Layer Compound $(LaS)_xVS_2(xapprox 1.18)$

ABSTRACT

Single crystals of misfit layered (LaS)xVS2(x 1.18) were grown using LaCl3(or I2) as a mineralizer (or transport agent) for the single crystal X-ray diffraction analysis. Procession photographs of (LaS)xVS2(x 1.18) were analyzed as the stacking structure of two kinds of LaS-and VS2-subcell. The result shows that two sublattices have common periodicities along the a*-and c*-axes, respectively, but not along the b*-axis. Sublattice dimensions of LaS and VS2 layers along b-axis were 5.67$AA$ and 3.42$AA$, respectively. Their ratio was 1.657 which is very close to 5/3.