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The precision of thermal-expansion tensors of triclinic and monoclinic crystals
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1991
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Crystal StructureEngineeringNuclear PhysicsThermal AnalysisThermophysicsThermodynamicsCrystal FormationThermal-expansion TensorsThermoanalytical MethodMaterials ScienceUnit-cell ParametersPhysicsCrystal MaterialHeat TransferCrystallographyCrystal Structure DesignThermal-expansion-tensor ComponentsNatural SciencesApplied PhysicsTemperature MeasurementThermal EngineeringD Values
If thermal-expansion-tensor components αij are determined from temperature-induced changes in d values, most authors first calculate the unit-cell parameters at different temperatures. From these, the αij are computed. It is shown that this procedure involves a reduced precision if compared with the direct least-squares determination of αij from changes in the d values.