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US 5,476,720 AGranted
Films of KTN and KTAO.sub.3
OwnerPeter Gunter, Roland Gutmann +1inventors
InventorsPeter Gunter, Roland Gutmann, Jurg Hulliger
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Abstract
The invention relates to new films for applying to a substrate and to methods for producing them. A composition, for use in preparing a film, (preferably an epitactic film) comprising a solid solution of KNbO.sub.3 and KTaO.sub.3 forming a product of formula I K.sub.1-y M.sub.y Ta.sub.1-x Nb.sub.x O.sub.3 (I) in which M is a monovalent metal ion other than K.sup.+ (hereinafter defined as the dopant); y=0.02 to 0.20 and x=0.05 to 0.95.
Claims5
A substrate on which a product of formula I
- K.sub.1-y M.sub.y Ta.sub.1-x Nb.sub.x O.sub.3 (I)
- in which M is a monovalent metal ion other than K.sup.+ ;
- y=0.02 to 0.20 and
- x=0.05 to 0.95,
- has been applied as an epitaxial coating layer.
2 more elements
A KTaO.sub.3 crystal to which an epitaxial film has been applied, the film composition comprising:
- i) 5-95 mol % KNbO.sub.3
- ii) 95-5 mol % KTaO.sub.3
- and containing 2 to 20 mol % of a monovalent metal other than K.sup.+.
Dependencies are inferred from the claim text.