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Superlattice ordering in SrFeO 3– δ : Electron microscopy and diffraction study
Author(s) -
Schott Stefanie,
Jia Zhihong,
Schaper Andreas K.,
Thangadurai Venkataraman,
Weppner Werner,
SchmidBeurmann Peter
Publication year - 2005
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200521012
Subject(s) - superlattice , electron diffraction , perovskite (structure) , electron microscope , diffraction , crystallography , materials science , spinodal decomposition , condensed matter physics , reflection high energy electron diffraction , phase (matter) , chemistry , physics , optics , organic chemistry
The oxygen‐deficient SrFeO 2.74 phase of quenched samples is located within the miscibility gap of the SrFeO 3– δ perovskite system, and exhibits a manifold vacancy ordering pattern at room temperature. We have studied the complex ordering by high‐resolution electron microscopy, and by electron and X‐ray diffraction. New principal superlattice structures have been identified by electron diffraction which can be of relevance for the electronic and magnetic properties of this respective perovskite system. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)