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Effect of grain size on domain structures, dielectric and thermal depoling of Nd-substituted bismuth titanate ceramics

Year: 2013
Type: article
Abstract: The microscopic origin of the grain size effects on the dielectric, piezoelectric, and thermal depoling properties of Aurivillius phase Bi3.15Nd0.85Ti3O12 was investigated. Using atomic force microscopy, domain walls were observed in micrometer grain size ceramics, but gradually disappeared with reducing grain size and were not found in ceramics with 90 nm grain size. In strain-electric field butterfly loops, the strain decreased with decreasing grain size indicating a decreasing contribution of non-180° domain walls switching to the strain. Lattice distortion (a−b)/b decreased with decreasing grain size. The thermal depoling resistance decreased with decreasing grain size, due to increasing internal mechanical stresses.
DOI: 10.1063/1.4827537
Authors: Giuseppe Viola, Kok Boon Chong, Mirva Eriksson, Zhijian Shen, Jiangtao Zeng, Qingrui Yin, Yanmei Kan, Peiling Wang, Huanpo Ning, Hongtao Zhang, Michael E. Fitzpatrick, Michael J. Reece, Haixue Yan
Institutions: Queen Mary University of London, The Open University, Stockholm University, Chinese Academy of Sciences, Shanghai Institute of Ceramics, University of Oxford, Nanoforce Technology (United Kingdom)
Language: English
Open Access status: bronze
OpenAlex ID: W2000727157
FWCI: 1.336
Cites: 28
Cited by: 46
Related to: 10