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https://hdl.handle.net/11147/14323| Title: | Electrocaloric behaviour of tape cast and grain oriented NBT-KBT ceramics | Authors: | Ünal,M.A. Karakaya,M. Irmak,T. Yıldırım-Özarslan,G. Avcı,A.M. Fulanovic,L. Adem,U. |
Keywords: | Electrocaloric effect Grain orientation Sodium bismuth titanate Tape casting Templated grain growth |
Publisher: | Elsevier Ltd | Abstract: | We have investigated the effects of grain orientation and tape casting process on the electrocaloric properties of 0.82Na0.5Bi0.5TiO3-0.18 K0.5Bi0.5TiO3 (0.82NBT-0.18KBT) ceramics at the Morphotropic Phase Boundary (MPB), using direct and indirect measurements. We observe a larger electrocaloric response for the template-free ceramics compared to 7 and 10 wt% template containing ones, suggesting that grain orientation along rhombohedral < 100 > does not improve the electrocaloric response. Indirect measurements yielded a large adiabatic temperature change of around 3 K under an electric field of 50 kV/cm, which is significantly higher than 0.9 K reached at a lower electric field of 40 kV/cm using the direct measurement. © 2023 Elsevier Ltd | URI: | https://doi.org/10.1016/j.jeurceramsoc.2023.11.042 https://hdl.handle.net/11147/14323 |
ISSN: | 9552-219 |
| Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection |
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