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A series of BaAl2-xSixH2-x (0.4 < x < 1.6) hydrides with compositions and structures in between BaSi2 and BaAl2H2
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
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2010 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 505, no 1, 1-5 p.Article in journal (Refereed) Published
Abstract [en]

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.
Keyword [en]
Aluminium hydrides, Band gap, X-ray powder diffraction
National Category
Physical Chemistry
Research subject
Materials Chemistry
Identifiers
URN: urn:nbn:se:su:diva-50085DOI: 10.1016/j.jallcom.2010.05.065ISI: 000281271200006OAI: oai:DiVA.org:su-50085DiVA: diva2:382324
Note
authorCount :5Available from: 2010-12-30 Created: 2010-12-21 Last updated: 2017-12-11Bibliographically approved

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