The Investigation of Relation Between the Transition Temperature and the Unit Cell Volume in (K1-xCsx)2ZnCl4 Mixed Crystals

✍ Scribed by H. Y. Ahn; Dr. H. T. Jeong; Dr. S. Y. Jeong

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 356 KB
• Volume: 32
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.2170320704

✦ Synopsis

The relation between the phase transition temperature and unit cell volume in the ( K I -, C & ) ~Z ~C ~~ mixed crystals was studied. The phase transition temperature of A2BX4 family is dependent on the size of cation and anion (FABRY and PEREZ-MATO). That is, the transition temperature of crystal decreases with increasing unit cell volume. In this study we investigated this property of mixed crystals with the increasing mixture ratio. From the current study, we obtained the result that in the mixed crystals (K1-xCg)2ZnC4, the increase of z induces the increase of unit cell volume, so that TI decreases with increasing unit cell volume. In order to determine the distribution of the substituted Cs+, using the near IR and UV spectrophotometer, we investigated both the band gap energy and the type of transition.