Abstract
Electric fatigue tests have been conducted on pure and manganese-modified Pb(In0.5Nb0.5)O3-Pb(Mg1/3Nb 2/3)O3-PbTiO3 (PIN-PMN-PT) single crystals along different crystallographic directions. Polarization degradation was observed to suddenly occur above 50-100 bipolar cycles in 〈1 1 0〉 oriented samples, while 〈0 0 1〉 oriented samples exhibited almost fatigue free characteristics. The fatigue behavior was investigated as a function of orientation, magnitude of the electric field and manganese dopant. It was found that 〈0 0 1〉 oriented PIN-PMN-PT crystals were fatigue free, due to its small domain size, being on the order of 1 μm. The 〈1 1 0〉 direction exhibited a strong electrical fatigue behavior due to mechanical degradation. Micro/macro cracks developed in fatigued 〈1 1 0〉 oriented single crystals. Fatigue and cracks were the result of strong anisotropic piezoelectric stress and non-180° domain switching, which completely locked the non-180° domains. Furthermore, manganese-modified PIN-PMN-PT crystals were found to show improved fatigue behavior due to an enhanced coercive field. © 2010 Acta Materialia Inc.
| Original language | English |
|---|---|
| Pages (from-to) | 3773-3780 |
| Journal | Acta Materialia |
| Volume | 58 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Jun 2010 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.Funding
The work was supported by the NIH under Grant No. P41-EB21820 and ONR under Grant Nos N00014-07-C-0858 and N00014-09-1-0456. F.L. wishes to acknowledge support from the China Scholarship Council.
Research Keywords
- Fatigue
- Ferroelectricity
- Internal stresses
- Perovskite crystal
- Piezoelectricity
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