Thermal Destiny of an Ionic Crystal

✍ Scribed by Joachim Maier; Wolfram Münch

• Book ID: 101298482
• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: German
• Weight: 164 KB
• Volume: 626
• Category: Article
• ISSN: 0372-7874
• DOI: 10.1002/(sici)1521-3749(200001)626:1<264::aid-zaac264>3.0.co;2-c

✦ Synopsis

Recently it has been shown that defect-defect interactions leading to anomalous rise in defect concentrations and eventually to phase transitions into a disordered state can be successfully described by a quasi defect lattice model . Using this approach the fact is highlighted that the evolution of an ionic crystal from the perfect state at T = 0 K to a weakly defective ideal crystal and eventually via passing a pre-melting regime to a superionic crystal (or melt) is una-voidable (given sufficient stability) and can be roughly phenomenologically calculated by using a few basic parameters only. Semi-empirical relations (e. g. Tammann rule) can be quantified in this way.