Effect of Ferroelectric Long-Range Order on the Unipolar and Bipolar Electric Fatigue in Bi1/2Na1/2TiO3-Based Lead-Free Piezoceramics
The fatigue behavior of the lead-free piezoelectric Bi1/2Na1/2 TiO3–BaTiO3K0.5Na0.5NbO3 (BNT-BT-KNN) under bipolar and unipolar electrical loading is investigated. Special attention is paid to the effect of a decreasing ferroelectric order which was affected by an increase in KNN-content. It is foun...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Wiley-Blackwell Publishing, Inc.
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/17373 |
| _version_ | 1848749449398976512 |
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| author | Luo, Zhenhua Granzow, T. Glaum, J. Jo, W. Rodel, J. Hoffman, M. |
| author_facet | Luo, Zhenhua Granzow, T. Glaum, J. Jo, W. Rodel, J. Hoffman, M. |
| author_sort | Luo, Zhenhua |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The fatigue behavior of the lead-free piezoelectric Bi1/2Na1/2 TiO3–BaTiO3K0.5Na0.5NbO3 (BNT-BT-KNN) under bipolar and unipolar electrical loading is investigated. Special attention is paid to the effect of a decreasing ferroelectric order which was affected by an increase in KNN-content. It is found that,in mainly ferroelectric systems with low KNN-content, bipolar cycling leads to domain wall pinning and formation of microcracks, while in mainly non-ferroelectric systems with high KNN-content fatigue can be rationalized by the repeated fieldinduced phase transition occurring during each field cycle. Under unipolar load, fatigue in low-KNN systems is dominated by domain wall pinning and the formation of a space charge field. Only the latter effect is present in non-ferroelectric high-KNN systems, which fatigue to a smaller degree. |
| first_indexed | 2025-11-14T07:21:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-17373 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:21:07Z |
| publishDate | 2011 |
| publisher | Wiley-Blackwell Publishing, Inc. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-173732017-02-28T01:27:44Z Effect of Ferroelectric Long-Range Order on the Unipolar and Bipolar Electric Fatigue in Bi1/2Na1/2TiO3-Based Lead-Free Piezoceramics Luo, Zhenhua Granzow, T. Glaum, J. Jo, W. Rodel, J. Hoffman, M. KNN-content unipolar bipolar lead-free piezoceramic fatigue behavior The fatigue behavior of the lead-free piezoelectric Bi1/2Na1/2 TiO3–BaTiO3K0.5Na0.5NbO3 (BNT-BT-KNN) under bipolar and unipolar electrical loading is investigated. Special attention is paid to the effect of a decreasing ferroelectric order which was affected by an increase in KNN-content. It is found that,in mainly ferroelectric systems with low KNN-content, bipolar cycling leads to domain wall pinning and formation of microcracks, while in mainly non-ferroelectric systems with high KNN-content fatigue can be rationalized by the repeated fieldinduced phase transition occurring during each field cycle. Under unipolar load, fatigue in low-KNN systems is dominated by domain wall pinning and the formation of a space charge field. Only the latter effect is present in non-ferroelectric high-KNN systems, which fatigue to a smaller degree. 2011 Journal Article http://hdl.handle.net/20.500.11937/17373 Wiley-Blackwell Publishing, Inc. restricted |
| spellingShingle | KNN-content unipolar bipolar lead-free piezoceramic fatigue behavior Luo, Zhenhua Granzow, T. Glaum, J. Jo, W. Rodel, J. Hoffman, M. Effect of Ferroelectric Long-Range Order on the Unipolar and Bipolar Electric Fatigue in Bi1/2Na1/2TiO3-Based Lead-Free Piezoceramics |
| title | Effect of Ferroelectric Long-Range Order on the Unipolar and Bipolar Electric Fatigue in Bi1/2Na1/2TiO3-Based Lead-Free Piezoceramics |
| title_full | Effect of Ferroelectric Long-Range Order on the Unipolar and Bipolar Electric Fatigue in Bi1/2Na1/2TiO3-Based Lead-Free Piezoceramics |
| title_fullStr | Effect of Ferroelectric Long-Range Order on the Unipolar and Bipolar Electric Fatigue in Bi1/2Na1/2TiO3-Based Lead-Free Piezoceramics |
| title_full_unstemmed | Effect of Ferroelectric Long-Range Order on the Unipolar and Bipolar Electric Fatigue in Bi1/2Na1/2TiO3-Based Lead-Free Piezoceramics |
| title_short | Effect of Ferroelectric Long-Range Order on the Unipolar and Bipolar Electric Fatigue in Bi1/2Na1/2TiO3-Based Lead-Free Piezoceramics |
| title_sort | effect of ferroelectric long-range order on the unipolar and bipolar electric fatigue in bi1/2na1/2tio3-based lead-free piezoceramics |
| topic | KNN-content unipolar bipolar lead-free piezoceramic fatigue behavior |
| url | http://hdl.handle.net/20.500.11937/17373 |