Structure refinement of (Al, Zn)49Mg32-type phases by single-crystal X-ray diffraction

Autor:	Kazumasa Sugiyama, Kenji Hiraga, Wei Sun, Francis Lincoln
Rok vydání:	2000
Předmět:	Diffraction Materials science Icosahedral symmetry Mechanical Engineering Quasicrystal Crystal structure Electron microprobe Condensed Matter Physics Crystallography Mechanics of Materials Atom X-ray crystallography General Materials Science Single crystal
Zdroj:	Materials Science and Engineering: A. :327-330
ISSN:	0921-5093
DOI:	10.1016/s0921-5093(00)01094-7
Popis:	Detailed structures of (Al, Zn) 49 Mg 32 -type crystalline phases, which are closely related to the Mg–Al–Zn icosahedral quasicrystal in Mg 40 Al 60− x Zn x ( x =14–51) alloys, were examined by single-crystal X-ray diffraction analysis. The structures have been determined with final R factors less than 0.04, and show good correspondence between chemical compositions obtained from structural refinements and those determined by electron probe microanalysis. The refined structures are somewhat different from that proposed by Bergman et al. [G. Bergman, J.L.T. Waugh, L. Pauling, Acta Crystallogr. 10 (1957) 254] in that they have no central atom in the Bergman-type atom cluster. The atom site occupancy is also discussed as a function of Zn content.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::41021f7b209ab1dafb4ffb5b0c0fd9d3 https://doi.org/10.1016/s0921-5093(00)01094-7 Zobrazit plný text záznamu Full Text from ScienceDirect