Assignment of the Powder X-Ray Diffraction Pattern of Superconductor Bi<SUB>2</SUB>(Sr, Ca)<SUB>3−<I>x</I></SUB>Cu<SUB>2</SUB>O<I><SUB>y</SUB></I>

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The powder X-ray diffraction pattern of superconductor Bi2(Sr, Ca)3−xCu2Oy was assigned taking into account the satellite reflections arising from an incommensurate modulated structure. All reflections are indexable with ha*+kb*+lc*+mk, provided that the wave vector k of the modulated structure is b*⁄4.8. The result shows that many satellites can be observed and some satellite intensities are strong.

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