Vacancy Segregation at Grain Boundaries In Ceramic Oxides

机译：陶瓷氧化物中晶界处的空位偏析

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Many of the important electronic and ionic properties in oxide ceramics are dominated by the interaction of oxygen vacancies with extended defects. Here, oxygen vacancy segregation to grain boundaries in perovskite structured SrTiO_3 and fluorite structured Yttria stabilized Zirconia (YSZ) is analyzed by atomic resolution Scanning Transmission Electron Microscopy (STEM). For both types of structure, grain boundaries are found to contain an excess of oxygen vacancies compared to the bulk material.

机译：氧化物陶瓷中许多重要的电子和离子性能受氧空位与扩展缺陷的相互作用支配。在此，通过原子分辨率扫描透射电子显微镜（STEM）分析了钙钛矿结构的SrTiO_3和萤石结构的氧化钇稳定的氧化锆（YSZ）中氧空位偏析到晶界。对于这两种类型的结构，发现与大块材料相比，晶界包含过量的氧空位。

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《Proceedings vol.2003-29; Epitaxial Growth of Functional Oxides Symposium and Electrochemical Society Meeting; 20031012-17; Orlando,FL(US)》|2003年|P.240-248|共9页
会议地点 OrlandoFL(US)
作者
Nigel D. Browning; Robert F. Klie; Yuanyuan Lei;
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作者单位

Department of Chemical Engineering and Materials Science, University of California-Davis, One Shields Ave, Davis, CA 95616. USA;

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会议组织
原文格式 PDF
正文语种 eng
中图分类材料;
关键词
scanning transmission electron microscopy; grain boundaries; vacancies;

机译：扫描透射电镜;晶界;空位;

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2. Grain Boundary Phase Segregation for Dramatic Improvement of the Thermoelectric Performance of Oxide Ceramics [J] . Song Xueyan, Navia Sergio A. Paredes, Liang Liang, ACS applied materials & interfaces . 2018,第45期

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3. Study of grain boundaries in polycrystalline Cr, Ta and W using nuclear gamma-resonance spectroscopy: Formation enthalpies of vacancy-oxygen complexes and single vacancies in grain boundaries, and dynamic properties of the grain boundary core in polycrystals of BCC metals [J] . S. M. Klotsman, V. N. Kaigorodov, M. S. Dudarev, Journal of Materials Science . 2005,第11期

机译：用核伽马能谱研究Cr，Ta和W多晶中的晶界：空位-氧配合物的形成焓和晶界中的单个空位，以及BCC金属多晶中晶界核的动态特性
4. Vacancy Segregation at Grain Boundaries In Ceramic Oxides [C] . Nigel D. Browning, Robert F. Klie, Yuanyuan Lei Epitaxial Growth of Functional Oxides Symposium . 2005

机译：陶瓷氧化物中晶界的空位偏析
5. Effects of bismuth grain boundary impurity segregation on the grain boundary diffusion of nickel into copper symmetric twist grain boundaries. [D] . Kempshall, Brian Wayne. 2001

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6. The Effect of Vacancies on Grain Boundary Segregation in Ferromagnetic fcc Ni [O] . Martina Mazalová, Monika Všianská, Jana Pavlů, 2020

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7. Observation of Segregation of Dopant/Oxide Ion Vacancies at Grain Boundaries using STEM-EELS [O] . 2012

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Vacancy Segregation at Grain Boundaries In Ceramic Oxides

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