Relaxor-PT ferroelectric single crystals

US8241519B2 · kind B2 · utility

Assignees

• TRS TECHNOLOGIES, INC. · US
• The Penn State Research Foundation · US

Inventors

• Jun Luo · State College, US
• Wesley S. Hackenberger · State College, US
• Shujun Zhang · State College, US
• Richard J. Meyer · Newport Beach, US
• Thomas R. Shrout · Laureldale, US
• Nevin P. Sherlock · Port Matilda, US

Key dates

• Filing date: Mar 16, 2010
• Grant date: Aug 14, 2012
• Expiry date: Mar 16, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10N30/095
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A <110> domain engineered relaxor-PT single crystals having a dielectric loss of about 0.2%, a high electromechanical coupling factor greater than about 85%, and high mechanical quality factor greater than about 500 is disclosed. In one embodiment, the relaxor-PT material has the general formula, Pb(B1B2)O3—Pb(B3)O3, where B1 may be one ion or combination of Mg2+, Zn2+, Ni2+, Sc3+, In3+, Yb3+, B2 may be one ion or combination of Nb5+, Ta5+, W6+, and B3 may be Ti4+ or combination of Ti4+ with Zr4+ and/or Hf4+.