Crystal structure of the incommensurately modulated nd-containing Bi-2222 phase

A. V. Mironov, P. Coppens, N. R. Khasanova, E. V. Antipov, V. Petricek

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

A single crystal of Bi2Sr1.7Nd1.8Ce0.5Cu2O10+δ (2222 phase) was obtained and its structure refined, including parameters describing the structural modulation (orthorhombic system, four-dimensional space group C:C2mb:111, a = 5.5000(4) Å, b = 5.4846(7) Å, c = 17.873 Å, Z = 2). The refinement of the average structure gave R = 0.061, while structure refinement including displacive and thermal modulation parameters resulted in R = 0.042 (overall) and R = 0.030 for the main reflections. The amplitudes and directions of modulation are very similar to those in the 2212 phase (1, 2), with displacements ranging up to 0.4 Å. The refinement shows extra oxygen to be located in BiO layers, and gives δ = 0.32(8), in reasonable agreement with previously reported values.

Original languageEnglish
Pages (from-to)74-82
Number of pages9
JournalJournal of Solid State Chemistry
Volume109
Issue number1
DOIs
Publication statusPublished - Mar 1994
Externally publishedYes

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