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SO4-chain formation and ordering in [YSrCa]Sr2Cu2.78(SO4)0.22O7−δ

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Volume
210
Identifiers
DOI: 10.1016/0921-4534(93)90988-3

Abstract

Abstract YBCO-based materials containing SO 4-tetrahedra centered on the Cu(1)-sites of the CuO-chain plane have been examined by means of electron diffraction and high resolution electron microscopy. An incommensurate modulation is observed and attributed to the ordering of b -oriented SO 4-rich chains in the Cu(1)-S-O-layer, described in terms of an SO 4-concentration wave.

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