A series of BaAl2-xSixH2-x (0.4 < x < 1.6) hydrides with compositions and structures in between BaSi2 and BaAl2H2
2010 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, Vol. 505, no 1, 1-5 p.Article in journal (Refereed) Published
By substituting Si- with (Al-H)(-) in trigonal BaSi2, a series of hydrides has been synthesized with compositions BaAl2-xSixH2-x (0.4 < x < 1.6). OFF calculations show that the end compositions BaSi2 and BaAl2H2 are conductors whereas the intermediate BaAlSiH is a semiconductor. The cell parameters for the trigonal cell vary linearly as a function of the Si-/(Al-H)(-) substitution in this MgB2 related structure type, opening up the possibility of continuously tunable electric properties.
Place, publisher, year, edition, pages
2010. Vol. 505, no 1, 1-5 p.
Aluminium hydrides, Band gap, X-ray powder diffraction
Research subject Materials Chemistry
IdentifiersURN: urn:nbn:se:su:diva-50085DOI: 10.1016/j.jallcom.2010.05.065ISI: 000281271200006OAI: oai:DiVA.org:su-50085DiVA: diva2:382324
authorCount :52010-12-302010-12-212010-12-30Bibliographically approved