Investigation of the Effect of Crystallographic Anisotropy and Defects on the Electrocaloric Response of Stress-free Relaxor Ferroelectric Plates by Experimental and Analytical Techniques
Abstract
Electrical measurements were made on random and textured samples reveal the impact of texture on the hysteresis and the dielectric response. When the P-E hysteresis loops of the random and textured ceramics in Fig.2. were compared, it was observed regardless of the measurement temperature that random ceramics had higher Pr and Pmax values and lower Ec values compared to the textured ceramics. This observation can be justified based on the development of a 001pc texture in a rhombohedral distorted perovskite. Application of an electric field to the 0.90PMN-0.10PT ceramics could be expected to induce a transition into a rhombohedral phase below the Tm. The spontaneous polarization direction in a perovskite with rhombohedral symmetry would be along the 111 pc directions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 21, 2022
- Accession Number
- AD1190050
Entities
People
- Ebru Mensur Alkoy
- I B Misirlioglu