Preparation and crystal structure of β-Ta 2N
Abstract
Samples of the tantalum nitride β-Ta 2N were obtained from the elements by the sintering of tantalum in nitrogen at 2000°C. In the zone melting of tantalum in nitrogen, samples with a lamella structure of β-Ta 2N and ɛ-TaN were formed. The crystal structure of β-Ta 2N was refined from a neutron diffraction powder pattern using the profile analysis method and the trigonal space group P overline31m (No. 162). Unite cell parameters are a = 5.285 (5) Å c = 4.919(3) Å, with Z = 3. The composition of the sample investigated was TaN 0.43(1).
- Publication:
-
Journal of Solid State Chemistry France
- Pub Date:
- February 1977
- DOI:
- 10.1016/0022-4596(77)90069-X
- Bibcode:
- 1977JSSCh..20..205C