Order-disorder phase transition in ZrV2D3.6

The deuterated C15-type Laves phase ZrV3D3.6 undergoes a structural phase transition near room temp. (T approx = 325 deg K). In the cubic high-temp. phase the deuterium atoms are disordered over two types of tetrahedral interstice, the centres of which are 1.3 A apart. In the tetragonal low-temp. ph...

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Bibliographic Details
Published in:Solid state communications 1981-05, Vol.38 (7), p.637-641
Main Authors: Didisheim, J.-J., Yvon, K., Fischer, P., Tissot, P.
Format: Article
Language:English
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Summary:The deuterated C15-type Laves phase ZrV3D3.6 undergoes a structural phase transition near room temp. (T approx = 325 deg K). In the cubic high-temp. phase the deuterium atoms are disordered over two types of tetrahedral interstice, the centres of which are 1.3 A apart. In the tetragonal low-temp. phase the D atoms are ordered and occupy only the energetically more favourable interstices. The tetragonal structure is isotypic with the low-temp. phase of HfV2D4. The shortest D--D distance is 2.1 A. 10 ref.--AA
ISSN:0038-1098
DOI:10.1016/0038-1098(81)90957-1