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Defect agglomeration in ferroelectric ceramics under cyclic electric field

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Abstract

The agglomeration of point defects in ferroelectric ceramics could be driven by repeated domain switching under cyclic electric field. The evolution equation of pore concentration under cyclic electric field is derived, with the help of a relation between the pore concentration and the extent of pore agglomeration. The results of the simulation agree quantitatively with the experimental data. An integrated framework about the mechanisms of electrically induced fatigue is proposed, which links the mechanisms at different scales.

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Authors and Affiliations

  1. Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China

    LiMing Geng & Wei Yang

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  1. LiMing Geng
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  2. Wei Yang
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Correspondence to Wei Yang.

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Supported by the National Natural Science Foundation of China (Grant Nos. 10332020 and 10121202) and the National “973” Project of China (Grant No. 2004CB619304)

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Geng, L., Yang, W. Defect agglomeration in ferroelectric ceramics under cyclic electric field. Sci. China Ser. E-Technol. Sci. 51, 1296–1305 (2008). https://doi.org/10.1007/s11431-008-0148-z

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  • DOI: https://doi.org/10.1007/s11431-008-0148-z

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