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https://hdl.handle.net/11147/14171| Title: | Electrocaloric behaviour of tape cast and grain oriented NBT-KBT ceramics | Authors: | Ünal, Muhammet Ali Karakaya, Merve Irmak, Tuğçe Yıldırım Özarslan, Gökçe Avcı, A. Murat Fulanovic, Lovro Suvacı, Ender Adem, Umut |
Keywords: | Electrocaloric effect Grain orientation Sodium bismuth titanate Tape casting Templated grain growth Bismuth compounds Ferroelectric ceramics |
Publisher: | Elsevier | 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/11147/14171 |
ISSN: | 0955-2219 |
| Appears in Collections: | Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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| 1-s2.0-S0955221923009469-main.pdf Until 2026-01-01 | 4.63 MB | Adobe PDF | View/Open Request a copy |
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