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Intergrowth of several solid phases from the Y–Ni–B–C system in a large YNi 2 B 2 C crystal
Author(s) -
Weissbach Torsten,
Leisegang Tilmann,
Kreyssig Andreas,
Frontzek Matthias,
Hoffmann JensUwe,
Souptel Dmitri,
Köhler Anke,
Behr Günter,
Paufler Peter,
Meyer Dirk C.
Publication year - 2008
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s002188980801279x
Subject(s) - superstructure , crystallography , scanning electron microscope , neutron diffraction , materials science , crystal (programming language) , diffraction , crystal structure , spectroscopy , x ray crystallography , electron microscope , chemistry , optics , physics , quantum mechanics , computer science , programming language , composite material , thermodynamics
A YNi 2 B 2 C single crystal containing traces of foreign phases was inspected by means of neutron and X‐ray diffraction as well as scanning electron microscopy and X‐ray spectroscopy methods. The diffraction patterns obtained from the experiments look similar to those expected for a superstructure. Nevertheless, they can be interpreted as crystallographically oriented precipitations of YB 2 C 2 and Ni 2 B within the YNi 2 B 2 C crystal, formed during the cooling process. The orientation relation between the lattices was obtained from experimental neutron and X‐ray data. Structure refinements of the collected X‐ray data were performed by separation of the intensity data of the individual phases. Scanning electron microscopy images of the inclusions found on a polished cross section of the crystal are presented; their chemical composition was determined using wavelength‐dispersive X‐ray analysis.