Journal article
Observation of crack growth in a polycrystalline ferroelectric by synchrotron X-ray diffraction
- Abstract:
- Pre-cracked samples of unpoled, polycrystalline, soft ferroelectric lead zirconate titanate were subjected to electrical and mechanical loading whilst using synchrotron X-ray diffraction to map strain-fields. Clear evidence is found of switching around the crack tip and development of a crack-wake. A J-integral estimate based on strain-field data provided a sensitive measure of strain changes during loading. Electrical loading did not cause crack advance or crack-tip switching; this provides evidence for electrically permeable crack models. There was also enhancement of electrically-driven switching in the crack-wake region. The results provide improved understanding and a resource for testing fracture models in ferroelectrics.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, pdf, 592.3KB, Terms of use)
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- Publisher copy:
- 10.1016/j.scriptamat.2017.06.053
Authors
+ Engineering and Physical Sciences Research Council
More from this funder
- Funding agency for:
- Barhli, S
- Grant:
- 1382829
- Publisher:
- Elsevier
- Journal:
- Scripta Materialia More from this journal
- Volume:
- 140
- Pages:
- 23–26
- Publication date:
- 2017-07-07
- Acceptance date:
- 2017-06-29
- DOI:
- ISSN:
-
1359-6454
- Pubs id:
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pubs:702936
- UUID:
-
uuid:6f24e36c-8a12-45f5-80a9-4c09695f168c
- Local pid:
-
pubs:702936
- Source identifiers:
-
702936
- Deposit date:
-
2017-07-04
Terms of use
- Copyright holder:
- Acta Materialia Inc
- Copyright date:
- 2017
- Notes:
- © 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. This is the accepted manuscript version of the article. The final version is available online from Elsevier at: https://doi.org/10.1016/j.scriptamat.2017.06.053
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