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Temperature dependence of dielectric properties for Sr 0 . 3 Ba 0 . 7 Bi 3 . 7 La 0 . 3 Ti 4 O 15 ferroelectric ceramics
| Content Provider | Semantic Scholar |
|---|---|
| Author | Xin-Hua, He Zheng, Mingui Chen, Zhiwu |
| Copyright Year | 2002 |
| Abstract | Bismuth layer structured ferroelectric ceramics, Sr0.3Ba0.7Bi3.7La0.3Ti4O15 (abbreviated as SBBLT), were fabricated by conventional and two-step sintering techniques. The effects of sintering processes on microstructure and dielectric properties of Sr0.3Ba0.7Bi3.7La0.3Ti4O15 ceramics were investigated. Dense and homogeneous ceramic materials with grain size of 1–3 μm were obtained. The decrease of oxygen vacancies in the two-step sintered ceramics decreases the conductivity, and also dielectric constant and dielectric loss at high temperature. The Curie temperature is shifted from 408°C of conventionally sintered ceramics to 345°C of two-step sintered ceramics at a soaking time of 15 h, which might attributed to smaller “rattling space” resulting from the decrease of unit-cell volume. The conductivity at high temperature decreases with increasing soaking time. The decrease in the conductivity is about one order of magnitude in two-step sintered samples. ©2009 The Ceramic Society of Japan. All rights reserved. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.jstage.jst.go.jp/article/jcersj2/117/1362/117_1362_217/_pdf/-char/en |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
