Intergrowth of several solid phases from the Y-Ni-B-C system in a large YNi2B2C crystal

Torsten Weissbach, Tilmann Leisegang, Andreas Kreyssig, Matthias Frontzek, Jens Uwe Hoffmann, Dmitri Souptel, Anke Köhler, Günter Behr, Peter Paufler, Dirk C. Meyer

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

A YNi2B2C 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 YB2C2 and Ni2B within the YNi2B2C 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.

Original languageEnglish
Pages (from-to)738-746
Number of pages9
JournalJournal of Applied Crystallography
Volume41
Issue number4
DOIs
StatePublished - 2008
Externally publishedYes

Keywords

  • Intermetallic compounds
  • Single-crystal diffraction methods

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