Ferroelektrische Perovskite

Ferroelektrische Perovskite

Pulverised ferroelectric perovskites with piezoelectric properties at temp. ≤ 300 degrees C are fabricated by inserting fluoride ions into anion sites and/or oxygen gaps. Typical processes in a liq. method include a co-pptn. of the principle cations forming the perovskite, then mixing with a metalli...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: EYRAUD, PAUL-AUBIN, EYRAUD, FRANCK, BOISRAYON, MICHEL, EYRAUD, LUCIEN, AUDIGIER, DAVID
Format: Patent
Sprache:ger
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
CONCRETE
ELECTRICITY
INORGANIC CHEMISTRY
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:Pulverised ferroelectric perovskites with piezoelectric properties at temp. ≤ 300 degrees C are fabricated by inserting fluoride ions into anion sites and/or oxygen gaps. Typical processes in a liq. method include a co-pptn. of the principle cations forming the perovskite, then mixing with a metallic or non-metallic fluoride, followed by thermal treatment at 600 degrees C allowing the insertion of the fluoride ions into the oxygen gaps or anion sites in the perovskite lattice.