physica status solidi (a) · 1985 · 44 citations · 8 references
Natural SciencesChemistryMaterials ScienceCrystal StructureThermal AnalysisThermodynamicsCrystal ChemistryCrystal SystemsThermal Expansion AnalysisThermal Properties Of MaterialsX-ray CrystallographyX-ray DiffractionAnisotropic Thermal ExpansionLattice ParametersPrincipal AxisTemperature-dependent DiffractionThermal ExpansionThermal Expansion CoefficientThermal Expansion Of CrystalsX-ray Diffraction Analysis
The lattice parameters α and c of the AgGaS2 and AgInS2 compounds are determined as a function of temperature by X-ray diffraction method in the temperature range from 80 to 650 K. The data are used to evaluate the coefficients of thermal expansion, perpendicular (α⟂) and parallel (α∥) to the principal axis, and the thermal expansion of the AC (αAC) and BC (αBC) bonds. It is found that for the two compounds almost over the whole investigated temperature range the coefficients of expansion α∥ and αBC are negative while the coefficients α⟂ and αAC are positive.
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