2007 (English)In: Acta Crystallographica Section E: Structure Reports Online, ISSN 1600-5368, Vol. 63, no 12, i195-i195 p.Article in journal (Refereed) Published
The crystal structure of YMgGa, yttrium magnesium gallide, is isotypic with LaMgGa and crystallizes in the hexagonal ZrNiAl type structure. It consists of a three-dimensional network of Mg and Ga atoms, in which Y atoms fill channels. There are two crystallographically independent Ga sites. One Ga atom (Ga1) has three Mg atoms as near neighbours and six Y atoms at a slightly longer distance, giving rise to a [3 + 6] coordination. Another Ga atom (Ga2) is also nine-coordinate but has six near Mg neighbours and three Y at a somewhat longer distance in a [6 + 3] coordination. The Mg atom is tetrahedrally coordinated by four Ga atoms and has two additional Mg neighbours at a slightly longer distance. The site symmetries for Y, Ga1, Ga2 and Mg are m2m, , 2m and m2m, respectively. The crystal used was an inversion twin.
Place, publisher, year, edition, pages
2007. Vol. 63, no 12, i195-i195 p.
IdentifiersURN: urn:nbn:se:uu:diva-12075DOI: 10.1107/S160053680705413XISI: 000251282300004OAI: oai:DiVA.org:uu-12075DiVA: diva2:39844