The structural transition from NaCl to CsCl type in cesium hydride

✍ Scribed by I. O. Bashkin; V. F. Degtyareva; Yu. M. Dergachev; E. G. Ponyatovskii

• Book ID: 104546926
• Publisher: John Wiley and Sons
• Year: 1982
• Tongue: English
• Weight: 350 KB
• Volume: 114
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2221140252

✦ Synopsis

Abstract

The CsH volume is measured in dependence on pressure up to 35 kbar. A structural NaCl to CsCl type transition associated with a volume jump of 8.6% is found at a pressure of about 6.5 kbar. The T—P phase diagram of CsH is plotted in the temperature range 200 to 525 K. The high pressure phase at liquid nitrogen temperature remains metastable down to atmospheric pressure. The lattice parameter of this phase is a = 3.820 Å at 100 K and atmospheric pressure, the lattice parameter of the initial (NaCl type) phase is a = 6.365 Å under the same conditions.