An X-ray diffraction study of the incommensurate modulations in single crystal Bl_2·2Sr_1·8CaCu₂O_8-x

Abstract

Abstract High—resolution X—ray diffraction measurements were performed on a single crystal of Bl2·2Sr1·8CaCu2O8-x at room temperature. The intensity distribution in the vicinity of the odd 001 reciprocal lattice points is presented. Asymmetrical arrangements of the incommensurate peaks q1 and q2 are observed. In the vicinity of the odd reciprocal lattice points new incommensurate satellites q3=-0·021b*+0·016c* with strong asymmetry of superlattice intensities are found.