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- Title
High thermal stability of BaTi<sub>0.93</sub>Sn<sub>0.07</sub>O<sub>3</sub> perovskite for capacitor applications.
- Authors
Kumari, Manisha; Sarun, P. M.
- Abstract
Recently, tremendous progress in the development of dielectric capacitors for temperature-based electronic applications has been observed. The development of lead-free ceramics with high dielectric constant, low dielectric loss, and thermal stability over a wide temperature range is yet a big concern of researchers. In the present work, lead-free BaTi0.93Sn0.07O3 bulk ceramics of an average grain size of 0.98 μm are prepared using the conventional solid-state reaction method. Rietveld analysis of XRD pattern suggests the formation of a single-phase tetragonal perovskite structure of BaTi0.93Sn0.07O3. The dielectric constant increases substantially, from room temperature (RT) to high temperature, i.e., up to 110 °C. Besides, the relative thermal stability of dielectric constant (TCC ≤ 30%) together with an ultra-low dielectric loss (tanδ ≤ 0.06) is achieved for the BaTi0.93Sn0.07O3 ceramics at 1 kHz in the temperature range from RT to 110 °C. A detailed analysis of BaTi0.93Sn0.07O3 ceramics is done with modulus, complex impedance spectroscopy, and conductivity studies. The outstanding stability of the dielectric properties is observed over a wide range of temperatures makes BaTi0.93Sn0.07O3 ceramics a promising material for the next generation's high-performance capacitors.
- Subjects
THERMAL stability; RIETVELD refinement; DIELECTRIC properties; PERMITTIVITY; LEAD-free ceramics; DIELECTRIC loss; CERAMICS; DIELECTRIC relaxation
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 11, p8607
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-021-06623-w