The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 2004
Filed:
Apr. 16, 2002
Kenji Uchino, State College, PA (US);
Yongkang Gao, State College, PA (US);
The Penn State Research Foundation, University Park, PA (US);
Abstract
The disclosed invention relates to piezoelectric rare earth doped Pb(Zr,Ti)O —Pb(Mn,Sb)O compounds including (zPb(Zr Ti )O —(1−z)Pb(Mn Sb )O +RE ) where z is ≦0.95, 0.40<w<0.60, and where RE is a rare earth cation dopant, and 0<x<5.0%. The doped compounds have both improved Q and (k). The RE dopants employed advantageously generate both “hardening” and “softening” effects in doped Pb(Zr,Ti)O —Pb(Mn,Sb)O compounds. The RE doped Pb(Zr,Ti)O —Pb(Mn,Sb)O compounds have advantageously high vibrational velocity compared to pure Pb(Zr,Ti)O —Pb(Mn,Sb)O compounds and commercialized hard PZT. The disclosed invention also relates to piezoelectric devices which include the doped piezoelectric ceramic compounds.