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- Title
Enhanced Pyroelectric Performance of Lead-Free Zn-Doped Na 1/2 Bi 1/2 TiO 3 -BaTiO 3 Ceramics.
- Authors
Patel, Satyanarayan; Lalitha, Kodumudi Venkataraman; Saurabh, Nishchay
- Abstract
Lead-free Na1/2Bi1/2TiO3-BaTiO3 (NBT-BT) has gained revived interest due to its exceptionally good high power properties in comparison to commercial lead-based piezoelectrics. Recently, Zn-modified NBT-BT-based materials as solid solution and composites have been reported to exhibit enhanced depolarization temperatures and a high mechanical quality factor. In this work, the pyroelectric properties of Zn-doped NBT-6mole%BT and NBT-9mole%BT ceramics are investigated. The doped compositions of NBT-6BT and NBT-9BT feature a relatively stable pyroelectric property in a wide temperature range of ~37 K (300–330 K) and 80 K (300–380 K), respectively. A threefold increase in detector figure of merit is noted for 0.01 mole Zn-doped NBT-6mole% BT at room temperature in comparison to undoped NBT-6mole%BT and this increase is higher than those of major lead-free materials. A broad range of the temperature-independent behavior for the figures of merit was noted (303–380 K) for Zn-doped NBT-6mole% BT, which is 30 K higher than the undoped material. The large pyroelectric figures of merit and good temperature stability renders Zn-doped NBT-BT an ideal candidate for pyroelectric detector and energy harvesting applications.
- Subjects
PYROELECTRIC detectors; ENERGY harvesting; QUALITY factor; SOLID solutions; HIGH temperatures; CERAMICS; PIEZOELECTRIC ceramics
- Publication
Materials (1996-1944), 2022, Vol 15, Issue 1, p87
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma15010087