A modulated structure derived from the XA-type Mn 2 RuSn Heusler compound

A modulated structure derived from the inverse Heusler phase (the XA-type and the disordered variant L2 B-type) has been observed in rapidly quenched Mn RuSn ribbons. The powder X-ray diffraction pattern of the quenched ribbons can be indexed as an L2 B-type structure. Electron diffraction patterns...

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Published inActa crystallographica Section B, Structural science, crystal engineering and materials Vol. 78; no. Pt 3 Pt 2; p. 485
Main Authors Li, Xing Zhong, Zhang, Wen Yong, Skomski, Ralph, Sellmyer, David
Format Journal Article
LanguageEnglish
Published England 01.06.2022
Subjects
Landyne software
Mn2RuSn
modulated structure
TEM
Heusler compounds
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Summary:A modulated structure derived from the inverse Heusler phase (the XA-type and the disordered variant L2 B-type) has been observed in rapidly quenched Mn RuSn ribbons. The powder X-ray diffraction pattern of the quenched ribbons can be indexed as an L2 B-type structure. Electron diffraction patterns of the new structure mostly resemble those of the XA-type (and the disordered variant L2 B-type) structure and additional reflections with denser spacing indicate a long periodicity. Orthogonal domains of the modulated structure were revealed by a selected-area electron diffraction pattern and the corresponding dark-field transmission electron microscopy images. The structure was further studied by the crystallographic analysis of high-resolution transmission electron microscopy images. A model for the modulated structure has been proposed to interpret the experimental results.
ISSN:2052-5206
DOI:10.1107/S205252062200333X