Phase Transitions · 1979 · 23 citations · 10 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMechanical Behavior Of MaterialsSolid State PhysicsCrystal LatticeLattice StructuresPerovskite MaterialsPhase TransitionsElastic ConstantsLattice ParametersLattice StrainMean-field TheoryTemperature DependenceTemperature Dependence Of DeformationTemperature Dependence Of ElasticityTemperature-dependent Material Behavior
Abstract Precise measurements of the lattice parameters of Pb3(PO4)2 as a function of temperature are presented, from which the spontaneous strain and its tensor components are calculated. The ferroelastic transition is shown to be of first order. Mean-field theory is shown to describe the experimental behaviour of the material, with a crossover, at about 160°C, from a critical to a first-order regime. This result is interpreted on the basis of the temperature dependence of elastic constant c22.
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Physical Properties of Crystals
Materials Today · 2007 · 7.8K citations · Full text
Domain-wall orientations in ferroelastics
J. Sapriel · Physical review. B, Solid state · 1975 · 803 citations