Abstract
The 〈001〉-oriented 0.7PMN-0.3PT and 0.67PMN-0.33PT crystals are characterized under uniaxial stress and electric field loading above the coercive field. Strain-electric-field and electric-displacement-electric-field hysteresis loops are measured at various compressive stresses showing a notable effect of stress on the electromechanical coupling. A moderate uniaxial stress can advance their electromechanical properties. Stress-strain curves are run at zero electric field, showing that depolarization for 〈001〉-oriented 0.7PMN-0.3PT crystal begins at 7 MPa, while as little as 3 MPa for 0.67PMN-0.33PT crystal, placing a severe limitation in actuator applications.
Original language | English |
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Article number | 024103 |
Journal | Journal of Applied Physics |
Volume | 97 |
Issue number | 2 |
DOIs | |
Publication status | Published - 15 Jan 2005 |
Externally published | Yes |