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A modulated structure derived from the XA‐type Mn 2 RuSn Heusler compound
Author(s) -
Li Xing-Zhong,
Zhang Wen-Yong,
Skomski Ralph,
Sellmyer David
Publication year - 2022
Publication title -
acta crystallographica section b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.604
H-Index - 33
ISSN - 2052-5206
DOI - 10.1107/s205252062200333x
Subject(s) - transmission electron microscopy , crystallography , diffraction , materials science , type (biology) , resolution (logic) , electron diffraction , structure type , electron microscope , high resolution transmission electron microscopy , inverse , phase (matter) , condensed matter physics , crystal structure , chemistry , physics , optics , nanotechnology , mathematics , geometry , ecology , organic chemistry , artificial intelligence , computer science , biology
A modulated structure derived from the inverse Heusler phase (the XA‐type and the disordered variant L2 1 B‐type) has been observed in rapidly quenched Mn 2 RuSn ribbons. The powder X‐ray diffraction pattern of the quenched ribbons can be indexed as an L2 1 B‐type structure. Electron diffraction patterns of the new structure mostly resemble those of the XA‐type (and the disordered variant L2 1 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.