Probing the electrical activity of grain boundaries in acceptor-doped perovskite oxides through ion transport experiments (B05)

通过离子输运实验探测受体掺杂钙钛矿氧化物中晶界的电活性（B05）

• 批准号: 513484191
• 金额: --
• 依托单位: Lehrstuhl für Physikalische Chemie I
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/513484191?language=en
• 关键词: Probing; electrical; activity; grain; boundaries

Project B05 has the overarching aim to determine and understand the space-charge potential at grain boundaries in BaTiO3 ceramics by studying ion transport across and along these interfaces. The space-charge potential is determined for specifically conditioned ceramics by means of impedance spectroscopy, and by means of a new, complementary approach: the characterization of fast cation diffusion along grain-boundaries in BaTiO3 ceramics using Secondary Ion Mass Spectrometry (SIMS) analysis. The project thus also yields cation diffusion data, information that is necessary for the analysis and simulation of grain-growth, sintering and dopant-accumulation phenomena.

B05项目的总体目的是通过研究跨这些接口和沿这些界面的离子运输来确定和了解Batio3陶瓷晶界的空间充电潜力。通过阻抗光谱和通过一种新的互补方法来确定特定条件的陶瓷的空间电势：使用次级离子质谱法（SIMS）分析，快速阳离子沿BATIO3陶瓷沿晶型陶瓷的晶粒构造的表征。因此，该项目还产生了阳离子扩散数据，这是分析和模拟晶粒生长，烧结和掺杂剂蓄积现象所必需的信息。