[HTML][HTML] Quenching effects and mechanisms in bismuth-based perovskite ferroelectrics

KV Lalitha, B Wang, P Ren, DA Hall, T Rojac - Open Ceramics, 2022 - Elsevier
The similar electronic structure of Bi 3+ and Pb 2+ has motivated researchers to explore
bismuth-based perovskite compounds, which in the past decade has been further fuelled by …

Decoding the atomic-scale structural origin of large strain performance in BNT-6BT based relaxor ferroelectrics

C Liu, J Xu, T Zheng, H Qian, T Zhang… - The Journal of …, 2023 - ACS Publications
The relationship between matter properties and their atomic-scale structures is a
challenging investigation. For relaxor ferroelectrics, correlating the relaxor mechanisms on …

Enhanced strains by flexible nanoscale domain structure in BNKT-SBT relaxor ferroelectrics

X Sun, H Qian, T Zheng, F Chen, Y Liu… - Journal of Materials …, 2022 - pubs.rsc.org
Achieving a high strain under a low electric field is critical for actuator applications, and so is
something which has always been pursued. Here, an enhanced strain was achieved by …

Quenching‐circumvented ergodicity in relaxor Na1/2Bi1/2TiO3‐BaTiO3‐K0.5Na0.5NbO3

Q Wei, A Riaz, S Zhukov, K Hofmann… - Journal of the …, 2021 - Wiley Online Library
Quenching alkaline bismuth titanates from sintering temperatures results in increased lattice
distortion and consequently higher depolarization temperature. This work investigates the …

Charge effects in donor‐doped perovskite ferroelectrics

J Liu, L Liu, J Zhang, L **, D Wang… - Journal of the …, 2020 - Wiley Online Library
Do** is a widely used method to tune the physical properties of ferroelectric perovskites.
Since do** can induce effective charges, it is important to understand how charges affect …

Influence of Quenching and Subsequent Annealing on the Conductivity and Electromechanical Properties of Na1/2Bi1/2TiO3-BaTiO3

L Kodumudi Venkataraman - Materials, 2021 - mdpi.com
Na1/2Bi1/2TiO3-based materials have gained considerable attention for their potential to
exhibit giant strain, very-high ionic conductivity comparable to yttria stabilized zirconia or …

Improving the photostriction of Na0. 5Bi0. 5TiO3-based lead-free ceramics by Bi nonstoichiometry

ZH Ren, A Jain, LN Shi, HZ Zhou, FG Chen… - Ceramics …, 2023 - Elsevier
In the present work, Bi non-stoichiometry is used to control oxygen vacancy concentration
and the ferroelectric to relaxor phase transition temperature (T FR) to optimize photostriction …

Hyper-Raman scattering from the LO modes of perovskite ferroelectric relaxors

A Al-Zein, B Hehlen - Physical Review B, 2024 - APS
Hyper-Raman scattering is used to study the temperature dependence of the longitudinal
optic (LO) modes of three prototypical ferroelectric relaxors in a broad temperature range …

The complex structural mechanisms behind strain curves in bismuth sodium titanate–barium titanate

KY Lee, X Shi, N Kumar, M Hoffman, M Etter… - Applied Physics …, 2020 - pubs.aip.org
In this work, the lead-free composition (1-x) Bi 0.5 Na 0.5 TiO 3–xBaTiO 3 (BNT–BT) with x=
0.12 was investigated using in situ Synchrotron x-ray powder diffraction. With the applied …

Influence of processing parameters on the ferroelectric-relaxor crossover in BNT-based piezoelectric ceramics

SK Gupta, BJ Gibbons, P Mardilovich… - Journal of Applied …, 2021 - pubs.aip.org
The effects of sintering time on the ferroelectric to relaxor crossover were systematically
investigated for Sr (Hf 0.5 Zr 0.5) O 3-modified Bi 0.5 (Na 0.8 K 0.2) TiO 3 ceramics, prepared …