Search results for "Lead scandium tantalate"

showing 2 items of 2 documents

Isomorphous ion substitutions and order-disorder phenomena in highly electrocaloric lead-scandium tantalate solid solutions

1996

Abstract The authors discuss the physical background of the electrocaloric effect in PST ceramics and its solid solutions. The most important contribution to the electrocaloric effect is due to field-induced Fm3m→R3m phase transition in the case of high long range ordering degree of B-ions in the perovskite structure ABO3.

Phase transitionMaterials scienceThermodynamicsCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsIonchemistry.chemical_compoundOrder (biology)chemistryvisual_artLead scandium tantalateElectrocaloric effectvisual_art.visual_art_mediumCeramicSolid solutionFerroelectrics
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On lead-scandium tantalate solid solutions with high electrocaloric effect

1992

Abstract The PbSc0,5Ta0,5O3 solutions are found to be a useful material for active elements of microcryogenic devices based on electrocaloric effect. A temperature difference of ΔT = 1. 0-1.8 K at field intensities 20–30 kV/cm in the interval of 210–310 K can be achieved by simultaneous or separate introducing of Sb and Co ions in B-sites of the lattice. The most important contribution to the electrocaloric effect is due to field-induced Fn3m → R3m phase transition in the case of high ordering of B-ions in the perovskite structure ABO3.

chemistry.chemical_compoundPhase transitionMaterials sciencechemistryCondensed matter physicsLattice (order)Lead scandium tantalateElectrocaloric effectTemperature differenceCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsSolid solutionFerroelectrics
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