| 铋含量对钛酸镧铋陶瓷结构和介电性能的影响 |
| |
| 引用本文： | 方频阳,樊慧庆,LIU Lai-jun,QIU Shao-jun,CHEN Jin.铋含量对钛酸镧铋陶瓷结构和介电性能的影响[J].材料科学与工程学报,2007,25(6):895-898. |
| |
| 作者姓名： | 方频阳 樊慧庆 LIU Lai-jun QIU Shao-jun CHEN Jin |
| |
| 作者单位： | 1. 西北工业大学材料学院,凝固技术国家重点实验室,陕西,西安,710072
2. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China |
| |
| 基金项目： | Foundation item： National Nature Science Foundation （50672075） and the Xi＇an S＆T Research Foundation （GG05015, GG06023 ）, the SRFDP （20050699011 ） and EYTP and NCET Program of M0E, Science Creative Foundation （2006CR06） NPU of China. |
| |
| 摘 要： | 通过固相合成的方法制备了Bi3.25,LaxTi3O12（x=0．98～1．03，简称BLT）陶瓷。通过XRD，SEM和阻抗分析仪表征了陶瓷的晶体结构和晶体形貌，测试了陶瓷的介电频谱，结果表明陶瓷的晶体结构为典型的层状钙钛矿结构且不随Bi含量和温度的变化而改变；随着Bi含量的增加晶体形貌由棒状颗粒向片状颗粒转变，而且陶瓷的致密度也得到提高；介电常数随Bi含量的增加先增大后减小，并且在x=1．02时达到最大值。
|
| 关 键 词： | 铋层状钙钛矿结构 BLT 介电性能 铁电陶瓷 Bi-layer perovskite structure BLT dielectric properties ferroelectric ceramics 铋含量 钛酸镧铋 陶瓷结构 介电性能 影响 Technique Conventional Ceramics Bismuth Titanate Dielectric Properties Structure Content maximum dielectric constant decreases scanning electron microscopy morphology crystal structure increasing bismuth titanate |
| 文章编号： | 1673-2812（2007）06-0895-04 |
| 收稿时间： | 2006-06-01 |
| 修稿时间： | 2007-07-11 |
Influence of Bi Content on the Structure and Dielectric Properties of Lanthanum-modified Bismuth Titanate Ceramics by the Conventional Solid-solution Technique |
| |
| FANG Pin-yang,FAN Hui-qing,LIU Lai-jun,QIU Shao-jun,CHEN Jin.Influence of Bi Content on the Structure and Dielectric Properties of Lanthanum-modified Bismuth Titanate Ceramics by the Conventional Solid-solution Technique[J].Journal of Materials Science and Engineering,2007,25(6):895-898. |
| |
| Authors: | FANG Pin-yang FAN Hui-qing LIU Lai-jun QIU Shao-jun CHEN Jin |
| |
| Abstract: | Lanthanum-modified bismuth titanate, Bi3.25-x La0.75Ti3O12 (BLT) ceramics, with x ranging from 0.98 to 1.03 were prepared by the conventional solid-solution technique. The crystal structure, morphological and dielectric properties of BLT ceramics were investigated by the X-ray diffraction (XRD), the scanning electron microscopy (SEM) and the impendence analyzer. It is indicated that the crystal structure of ceramic is a classic Bi-layer perovskite structure. The crystal structure doesn't change with bismuth content and the sintering temperature. The micro morphology transformes from stick-like crystal grains to slice-like crystal grains with bismuth content increasing . The dielectric constant firrstly increases then decreases with increasing content of bismuth, and arrives at a maximum at x = 1.02. |
| |
| Keywords: | Bi-layer perovskite structure BLT dielectric properties ferroelectric ceramics |
| 本文献已被 维普 万方数据 等数据库收录！ |
