Process for the manufacture of ferroelectric materials

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United States of America Patent

PATENT NO 8936731
SERIAL NO

13263213

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Abstract

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A process for the preparation of a niobium compound of formula (I):

description='In-line Formulae' end='lead'DαNbβEγO3-δ  (I)description='In-line Formulae' end='tail'

    whereinD is an alkali metal (e.g. Li, Na, K, Rb, Cs and/or Fr), alkaline earth metal (such as Ba, Ca, Mg and/or Sr), La and/or Bi and may be present as a mixture of two or more metals;E is Ta, Sb and/or Fe and may be present as a mixture of two or more metals;α is a positive numberβ is a positive numberγ is zero or a positive numberδ is a number 0≦δ≦0.5;and wherein the formula (I) has the perovskite or tungsten bronze structure;comprising spray pyrolising a solution, for example an aqueous solution, comprising metal (D) ions, Nb ions and if present, metal (E) ions.

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Patent Owner(s)

Patent OwnerAddress
CERPOTECH AS7072 HEIMDAL

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Einarsrud, MariAnn Trondheim, NO 1 4
Grande, Tor Trondheim, NO 8 31
Madaro, Francesco Fort Worth, US 1 4
Wiik, Kjell Trondheim, NO 3 5

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