Piezoelectric material, multilayer actuator and method for manufacturing a piezoelectric component

US7999448B2 · kind B2 · utility

Assignee

• EPCOS AG · DE

Inventors

• Adalbert Feltz · Jena, DE
• Michael Schossmann · Hall in Tirol, AT
• Patrick Schmidt-Winkel · Bad Gams, AT

Key dates

• Filing date: Sep 2, 2009
• Grant date: Aug 16, 2011
• Expiry date: Sep 2, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/42
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A piezoelectric material contains a material with the molecular formula P1−c−dDcZd, wherein: 0<c≦0.15 and 0≦d≦0.5, wherein P represents the composition Pb(Zr1−yTiy)O3 and wherein: 0.50≦1−y≦0.60, wherein Z represents an additional component of the perovskite type of structure, wherein D represents a material according to the general formula [(M1O)1−p(M2O)p]a[Nb2O5]1−a, wherein M1 represents Ba1−tSrt with 0≦t≦1 and M2 represents strontium or calcium and wherein: ⅔<a<1 and 0<p<1, wherein the material D contains the cryolite type of structure.