Modulated structure inBi2Sr2Ca1−xYxCu2Oy

Abstract
Features of modulated structures in Bi2 Sr2 Ca1x Yx Cu2 Oy have been investigated by means of electron microscopy. In addition to two one-dimensional modulated structures with different periods, a new structure modulated along the a and b axes is found in 0.8≤x≤1.0. A high-resolution electron micrograph shows that the new structure is characterized by the periodic array of wavy stripes along the b axis.