Information card for entry 2103531

Structure parameters

• Formula: Ga5.54 La3 O14 Ta0.46
• Calculated formula: Ga5.5 La3 O14 Ta0.5
• Title of publication: Pressure-induced phase transitions of piezoelectric single crystals from the langasite family: La~3~Nb~0.5~Ga~5.5~O~14~ and La~3~Ta~0.5~Ga~5.5~O~14~
• Authors of publication: Pavlovska, A.; Werner, S.; Maximov, B.; Mill, B.
• Journal of publication: Acta Crystallographica Section B
• Year of publication: 2002
• Journal volume: 58
• Journal issue: 6
• Pages of publication: 939 - 947
• a: 8.158 Å
• b: 8.158 Å
• c: 5.099 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 293.9 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Ambient diffracton pressure: 3000000 kPa
• Number of distinct elements: 4
• Space group number: 150
• Hermann-Mauguin space group symbol: P 3 2 1
• Hall space group symbol: P 3 2"
• Residual factor for all reflections: 0.04
• Residual factor for significantly intense reflections: 0.0389
• Weighted residual factors for significantly intense reflections: 0.1249
• Weighted residual factors for all reflections included in the refinement: 0.1364
• Goodness-of-fit parameter for all reflections included in the refinement: 1.138
• Diffraction radiation wavelength: 0.56 Å
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No