Effect of a Transverse Tensile Stress on the Electric-Field-Induced Domain Reorientation in Soft PZT: In Situ XRD Study
| Autor: | David L. Milius, Wan Y. Shih, Ilhan A. Aksay, James S. Vartuli, Wei-Heng Shih, Xiaoping Li |
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| Rok vydání: | 2004 |
| Předmět: |
Phase boundary
Materials science business.industry Lead zirconate titanate Piezoelectricity Stress (mechanics) chemistry.chemical_compound Transverse plane Tetragonal crystal system Optics chemistry Electric field Ultimate tensile strength Materials Chemistry Ceramics and Composites Composite material business |
| Zdroj: | Journal of the American Ceramic Society. 85:844-850 |
| ISSN: | 1551-2916 0002-7820 |
| Popis: | The effect of a transverse tensile stress on the electric-field-induced 90°-domain reorientation in tetragonal lead zirconate titanate (PZT) near the morphotropic phase boundary was investigated in situ using X-ray diffraction (XRD). The XRD intensity ratio, I(002)/I(200), which represents the ratio of the volume of the c-domains to that of the a-domains on the PZT surface, was examined as a function of the electric field at various stress levels. It was found that a transverse tensile stress changes the electric-field dependence of I(002)/I(200), especially at higher electric fields. Without a transverse tensile stress, I(002)/I(200) began to saturate at E≈ 800 kV/m. With a transverse tensile stress of 75 MPa, I(002)/I(200) increased with an upward curvature with the electric field, indicating that the transverse tensile stress enhanced the field-induced 90°-domain reorientation, and increased the effective piezoelectric coefficients at larger electric fields. At E= 900 kV/m, the estimated d31,domain changed from −200 × 10−12 V/m at zero stress, to −350 × 10−12 V/m at 75 MPa. |
| Databáze: | OpenAIRE |
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