Structure and electrical properties of [(Na0.825K0.175)(0.5)Bi-0.5](1+x)TiO3 piezoceramics with A-site nonstoichiometry
文献类型：期刊论文
| 作者 | Chen, XM; Liao, YW; Li, GR |
| 刊名 | JOURNAL OF ASIAN CERAMIC SOCIETIES
 |
| 出版日期 | 2020-08-21 |
| ISSN号 | 2187-0764 |
| DOI | 10.1080/21870764.2020.1806192 |
| 文献子类 | Article; Early Access |
| 英文摘要 | A type of nonstoichiometric piezoceramics, [(Na0.825K0.175)(0.5)Bi-0.5](1+x)TiO3 (BKNT-x, x = 0-0.009), was synthesized by the conventional sintering method. The effects of Bi3+, Na+ and K(+)content on the structure and electrical properties of 0.825Bi(0.5)Na(0.5)TiO(3)-0.175Bi(0.5)K(0.5)TiO(3) piezoceramics were investigated. The XRD patterns demonstrated that BKNT-x piezoceramics form a solid solution without a secondary phase. Meanwhile, SEM micrographs indicated that excess [(Na0.825K0.175)(0.5)Bi-0.5](2+) suppresses grain growth and that BKNT-x ceramics become considerably denser. BKNT-0.002 ceramics offer the following enhanced properties: d(33) = 154 pC/N, k(p) = 33%, epsilon(r) = 1087, tan delta = 0.036, and Q(m) = 116. This improvement of properties is most likely related to the dense structure and the maintenance of morphotropic phase boundaries through the introduction of a proper A-site cation excess. For ceramics containing volatile elements, stoichiometric control is an efficacious method of enhancing performance. |
| WOS关键词 | FREE PIEZOELECTRIC CERAMICS ; DIELECTRIC-PROPERTIES ; PHASE ; MICROSTRUCTURE ; TEMPERATURE ; SYSTEM |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 源URL | [http://ir.sic.ac.cn/handle/331005/27819]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Chen, XM,Liao, YW,Li, GR. Structure and electrical properties of [(Na0.825K0.175)(0.5)Bi-0.5](1+x)TiO3 piezoceramics with A-site nonstoichiometry[J]. JOURNAL OF ASIAN CERAMIC SOCIETIES,2020. |
| APA | Chen, XM,Liao, YW,&Li, GR.(2020).Structure and electrical properties of [(Na0.825K0.175)(0.5)Bi-0.5](1+x)TiO3 piezoceramics with A-site nonstoichiometry.JOURNAL OF ASIAN CERAMIC SOCIETIES. |
| MLA | Chen, XM,et al."Structure and electrical properties of [(Na0.825K0.175)(0.5)Bi-0.5](1+x)TiO3 piezoceramics with A-site nonstoichiometry".JOURNAL OF ASIAN CERAMIC SOCIETIES (2020). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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