FERRO-ELECTRIC MATERIALS COMPOSITION

FERRO-ELECTRIC MATERIALS COMPOSITION

1. Ferroelectric compound of perovskite structure of the type A**2+ B**4+ O3 , formed of a lead titanate modified by an isovalent substitution at site A comprising the ions Pb**2+ and Ca**2+ and heterovalent substitutions at site B, characterized in that it complies with the following general formul...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: FILLOT, JEAN-JACQUES, EYRAUD, PAUL, EYRAUD, LUCIEN
Format: Patent
Sprache:eng ; fre
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
ELECTRICITY
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:1. Ferroelectric compound of perovskite structure of the type A**2+ B**4+ O3 , formed of a lead titanate modified by an isovalent substitution at site A comprising the ions Pb**2+ and Ca**2+ and heterovalent substitutions at site B, characterized in that it complies with the following general formula : (Pb1-(x+y) Cax Cdy) (Ti1-(v+w+z) Mnv Few Xz) O3 where X = Nb or Sb and according to which : 0.22 =< x =< 0.30 ; 0 =< y =< 0.18 ; 0.005 =< v =< 0.025 ; 0.005 =< w =< 0.02 and 0.01 =< z =< 0.035.