2025 - Sustainable Industrial Processing Summit
SIPS2025 Volume 5. Meyers Intl. Symp. / Composite
| Editors: | F. Kongoli, P. Assis, H.A.C. Lopera, S. Diaz, S.N. Monteiro, V.S. Candido |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2025 |
| Pages: | 316 pages |
| ISBN: | 978-1-998384-46-4 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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THE EFFECTS OF RARE EARTH METAL COMPOUND (Y2O3) ON THE FERROELECTRIC PROPERTIES OF (Bi0.5Na0.5)TiO3 BASE LEAD-FREE CERAMICS
Jeong-Ho Cho1;1KOREA INSTITUTE OF CERAMIC ENGINEERING AND TECHNOLOGY, Jinju-si, South Korea;
Type of Paper: Regular
Id Paper: 101
Topic: 18
Abstract:
Recent reports on the giant electric-field-induced strain of Bi0.5Na0.5TiO3 [BNT] based lead-free ceramics have highlighted their potential value for large-stroke actuator applications, as well as environmental benefits. While there are still several problems that have yet to be resolved, the large strain of > 0.4%, which is even larger than those reported for Pb(Zr,Ti)O3 [PZT] ceramics, is quite attractive to researchers and manufacturers.
In this study, (1-x)Bi0.5Na0.5TiO3-xABO3(LaYO3, YAlO3, YMnO3, YFeO3) ferroelectric ceramics were synthesized with a conventional solid state reaction method. The structures and morphologies of these ceramics were characterized by XRD (X-ray diffraction) and FE-SEM (field emission scanning electron microscopy). Analysing the electric polarization, electric-field-induced strain and temperature-dependence dielectric constant, the effects of rare earth metal compounds, such as LaYO3, YAlO3, YMnO3, and YFeO3, on the ferroelectric properties of (Bi0.5Na0.5)TiO3 based lead-free ceramics were investigated.
The large strain and low hysteresis of ceramics sintered at 1150℃ for 2h were obtained at an applied electric field of 2kV/mm.