Electrocaloric Behaviour of Tape Cast and Grain Oriented Nbt-Kbt Ceramics

Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/14171

Title:	Electrocaloric Behaviour of Tape Cast and Grain Oriented Nbt-Kbt Ceramics
Authors:	Unal, Muhammet Ali Karakaya, Merve Irmak, Tugce Yildirim-Ozarslan, Gokce Avci, A. Murat Fulanovic, Lovro Adem, Umut
Keywords:	Sodium bismuth titanate Electrocaloric effect Grain orientation Templated grain growth Tape casting
Publisher:	Elsevier Sci Ltd
Abstract:	We have investigated the effects of grain orientation and tape casting process on the electrocaloric properties of 0.82Na(0.5)Bi(0.5)TiO(3)-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.
Description:	Adem, Umut/0000-0002-2930-5567; Fulanovic, Lovro/0000-0002-9194-5688
URI:	https://doi.org/10.1016/j.jeurceramsoc.2023.11.042
ISSN:	0955-2219 1873-619X
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