• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on >Field-induced phase transition and relaxor character in submicrometer-structured lead-free (Bi0.5Na0.5)0.94Ba0.06TiO3 piezoceramics at the morphotropic phase boundary
【24h】

Field-induced phase transition and relaxor character in submicrometer-structured lead-free (Bi0.5Na0.5)0.94Ba0.06TiO3 piezoceramics at the morphotropic phase boundary

机译：亚微米结构无铅（Bi0.5Na0.5）0.94Ba0.06TiO3压电陶瓷在变质相边界处的场致相变和弛豫特性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Submicrometer-structured (Bi0.5Na0.5)0.94Ba0.06TiO3 ceramics ((G) -1, d15 = (158.3 - 8.31i) pC??N-1, kt = 40.4%, kp = 26.8%, and k15 = 40.2%] and d33 (148 pC??N-1) can be compared with the reported properties for coarse-grained ceramics. Shear resonance of thickness-poled plates is observed at T = 140u000b0;C. Permittivity versus temperature curves of poled samples show relaxor character up to Ti = 230u000b0;C on heating and Ti = 210u000b0;C on cooling of the depoled samples. The phase transition from the room-temperature ferroelectric (FE) to a low-temperature non-polar at zero field (LTNPZF) phase can be observed as a sharp jump in ;5;;4;33''(T) curves or, as the degree of poling decreases, as a soft change of slope of the curves at TFELTNPZF = Td = 100u000b0;C. This dielectric anomaly is not observed on cooling of depoled samples, because the FE phase is field-induced. The observed macroscopic piezoelectric activity above Td is a consequence of the coexistence of nanoregions of the FE phase in the interval between TFE-LTNPZF and Ti.
机译：亚微米结构（Bi0.5Na0.5）0.94Ba0.06TiO3陶瓷（（G）-1，d15 =（158.3-8.31i）pC ?? N-1，kt = 40.4％，kp = 26.8％，k15 =可以将40.2％]和d33（148 pC ?? N-1）与已报道的粗粒陶瓷的性能进行比较。在T = 140u000b0; C处观察到厚度极板的剪切共振; C.极化样品的介电常数与温度曲线在加热后的样品中显示出弛豫特性，直到Ti = 230u000b0; C，冷却后的Ti = 210u000b0; C；在零场下从室温铁电（FE）到低温非极性的相变（LTNPZF ）相可以观察为; 5 ;; 4; 33''（T）曲线中的急剧跳跃，或者随着极化程度的降低，随着TFELTNPZF = Td = 100u000b0; C时曲线斜率的软变化而观察到。由于有限元相是场感应的，因此在冷却样品时未观察到这种介电异常，而在Td上方观察到的宏观压电活性是共晶纳米区域共存的结果。 TFE-LTNPZF和Ti之间的间隔中的FE相。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号