Publication
Title
A 2a2a3c superstructure in hexagonal $Ni_{1-x}S$ : a study by means of electron-diffraction and HRTEM
Author
Abstract
 The high temperature phase of Ni1-xS has the NiAs-type structure. The coexistence of two superstructures, ''3a3a3c'' and ''2a2a3c'' with the basic phase is confirmed by means of electron diffraction. The 2a2a3c superstructure is studied by means of electron diffraction and high resolution electron microscopy. A structure model is proposed based on the periodic insertion of stacking faults in the NiAs-type basic structure and the ordering of vacancies in alternate metal-atom layers. Microtwinning in very narrow slabs is found to be a main feature of the 2a2a3c regions and two defect models are discussed.
Language
English
Source (journal)
Journal of crystal growth. - Amsterdam
Publication
Amsterdam : 1993
ISSN
0022-0248
Volume/pages
126 :2-3 (1993) , p. 457-465
ISI
A1993KH92500029
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address