Abstract
(1 - x)Pb(Hf 1-yTi y)O 3-x Pb(Mg 1/3Nb 2/3)O 3 (x = 0.1 ∼ 0.25, y = 0.555) ternary piezoelectric ceramics were prepared using the two-step precursor method. Morphotropic phase boundary (MPB) compositions, located at x = 0.18 ∼ 0.22, were confirmed using X-ray diffraction and by their dielectric, piezoelectric and ferroelectric properties. The optimum dielectric and piezoelectric properties were achieved for the MPB composition 0.8Pb(Hf 0.445Ti 0.555)O 3-0.2Pb(Mg 1/3Nb 2/3)O 3, with dielectric permittivity ε r, piezoelectric coefficient d 33, planar electromechanical coupling k p and Curie temperature T C being on the order of 2800, 680 pC/N, 70% and 276 °C, respectively. Of particular significance is that the new ternary ceramics exhibit comparable piezoelectric and electromechanical properties to commercial PZT5H ceramics, but with much improved T C, showing a potential for applications at elevated temperature.
Original language | English (US) |
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Pages (from-to) | 135-137 |
Number of pages | 3 |
Journal | Physica Status Solidi - Rapid Research Letters |
Volume | 6 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2012 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Condensed Matter Physics