Temperature dependence of lattice parameters of langasite single crystals

✍ Scribed by J. Kräußlich; S. Höfer; U. Zastrau; N. Jeutter; C. Baehtz

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 271 KB
• Volume: 45
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.201000034

✦ Synopsis

La 3 Ga 5 SiO 14 .

To determine the coefficient of thermal expansion of trigonal langasite (La 3 Ga 5 SiO 14 ) the two independent lattice parameters a and c are measured over a temperature range of 800 °C using X-ray diffraction on single crystal samples. From the given nonlinear temperature dependence the linear and quadratic thermal coefficients of expansion α 11 , β 11 and α 33 , β 33 for the two lattice parameters a and c could be deduced.