Ferroelectrics · 1988 · 15 citations · 2 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMaterials PhysicsSolid State PhysicsFerroelectric MaterialsPerovskite MaterialsPhase EquilibriaPhase TransitionsSolid-state Phase TransitionsFerroelectric Phase TransitionsFerroelectric PropertiesIncommensurate TransitionsLandau TheoryOrder Parameter AnalysisOrder Parameters
Abstract The sequence of cubic, incommensurate and ferroelectric phases found in Pb2 CoWO6 is described in the framework of the Landau theory. The model, which involves two different order-parameters, accounts for the first-order character of the transitions, the reentrant behaviour of the incommensurate phase and its coexistence with the ferroelectric phase.
2
Irreducible representations of space groups
Nuclear Physics · 1966 · 184 citations
Irreducible representations of space groups
N. Neto · Acta Crystallographica Section A · 1973 · 153 citations