High-pressure synthesis and crystal structures of β- M NX (M = Zr, Hf; X = Cl, Br, I)
Abstract
The single crystals of six kinds of metal nitride halide, β- M NX (M = Zr, Hf; X = Cl, Br, I), were grown in sealed Au (or Pt) tubes by the reaction of M N or M NX powders with NH4X as fluxes under high-temperature and high-pressure conditions such as 3-5 GPa at 900-1200̂C. The x-ray structure analysis revealed that all six kinds of compound crystallize in a rhombohedral space group Rβ-ZrNCl, β-ZrNBr, and β-HfNCl are isotypic with SmSI, and the others isostructural with YOF.
- Publication:
-
Journal of Physics Condensed Matter
- Pub Date:
- November 2002
- DOI:
- 10.1088/0953-8984/14/44/455
- Bibcode:
- 2002JPCM...1411209C