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Dielectric, elastic, and piezoelectric matrices of [001]-textured Mn-PMN-PZT ceramics.
- Source :
- Journal of Applied Physics; 5/14/2024, Vol. 135 Issue 18, p1-9, 9p
- Publication Year :
- 2024
-
Abstract
- [001]-textured 0.4P(Mg<subscript>1/3</subscript>Nb<subscript>2/3</subscript>)O<subscript>3</subscript>-0.25PbZrO<subscript>3</subscript>-0.35PbTiO<subscript>3</subscript>-0.5%MnO<subscript>2</subscript> (Mn-PMN-PZT) ceramics were fabricated by templated grain growth using 2 vol. % BaTiO<subscript>3</subscript> in this paper. Full matrices of dielectric (ɛ<subscript>ij</subscript>), elastic (s<subscript>ij</subscript>, c<subscript>ij</subscript>), and piezoelectric (d<subscript>ij</subscript>) parameters were obtained by the resonance–antiresonance method. The dielectric constant ɛ<subscript>33</subscript><superscript>T</superscript> of textured ceramics reaches 2600, which is four times that of random ceramics. Textured Mn-PMN-PZT ceramics exhibit high d<subscript>33</subscript> = 984 pC/N and high k<subscript>33</subscript> = 0.89, which is much larger than d<subscript>33</subscript> = 223 pC/N and k<subscript>33</subscript> = 0.70 of random ceramics. However, ɛ<subscript>11</subscript><superscript>T</superscript> of ceramics decreases by about 30% after texturing, and the corresponding shear coupling coefficient k<subscript>15</subscript> also decreases from 0.66 to 0.44, which may be due to the reduction in the angle between spontaneous polarization and transverse direction. Furthermore, the temperature stability of the textured ceramics was evaluated as well. The phase transition temperature T<subscript>R−T</subscript> was determined by the impedance method to be 120 °C. The textured Mn-PMN-PZT ceramic shows high temperature stability, which is better than PMN-PT. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 135
- Issue :
- 18
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 177227216
- Full Text :
- https://doi.org/10.1063/5.0212073