Structural phase transition and crystal structure of a highly deuterated (ND4)3D(SeO4)2 crystal
β Scribed by Fukami, T. ;Chen, R. H.
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 430 KB
- Volume
- 199
- Category
- Article
- ISSN
- 0031-8965
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π SIMILAR VOLUMES
The structure of (NH 4 ) 4 H 2 (SeO 4 ) 3 and (ND 4 ) 4 D 2 (SeO 4 ) 3 superionic crystals below 180 K determined by X-ray singlecrystal analysis is presented. The compounds have the following crystal data: (NH 4 ) 4 H 2 (SeO 4 ) 3 (T β«Ψβ¬ 140 K), triclinic, space group P-1, a β«Ψβ¬ 7.647(2) A s , b β«Ψ
Electric conductivity and X-ray diffraction measurements are performed on deuterated triammonium hydrogen disulphate (ND ) D(SO ) in high temperature phase. A new structural phase transition that corresponds to the transition at 463 K of 4 3 4 2 (NH ) H(SO ) is found at 413 K. The space group symmet