Structure resolution by electron diffraction tomography of the complex layered iron-rich Fe-2234-type Sr 5 Fe 6 O 15.4
作者： Christophe Lepoittevin
DOI: 10.1016/J.JSSC.2016.08.004
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摘要: Abstract The crystal structure of the strontium ferrite Sr5Fe6O15.4, was solved by direct methods on electron diffraction tomography data acquired a transmission microscope. refined cell parameters are a=27.4047(3) A, b=5.48590(7) A and c=42.7442(4) A in Fm2m symmetry. Its is built up from intergrowth sequence between quadruple perovskite-type layer with complex rock-salt (RS)-type block. In latter iron atoms found two different environments : tetragonal pyramid tetrahedron. structural model Rietveld method based powder X-ray pattern.
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