engleski

3. Diffraction analysis of incommensurate modulation in “ chain-ladder” composite crystal (Sr/Ca/La)14Cu24O41

We present the results of detailed electron diffraction study of complete reciprocal space of “ chain-ladder” compounds with formula (Sr/La/Ca)14Cu24O41 which exhibit a rather complex crystallographic structure due to their composite character. All spots of all relevant zones, can be indexed as structural reflections according to: H = ha* + kb* + lcLd* + mcCh*, and they need not to be assigned to some additional “ exotic” modulation on top of the complex composite structure.

modulated structure; composite crystal; electron diffraction

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