Khatua, Dipak Kumar ; K. V., Lalitha ; Fancher, Chris M. ; Jones, Jacob L. ; Ranjan, Rajeev (2016) Anomalous reduction in domain wall displacement at the morphotropic phase boundary of the piezoelectric alloy system PbTiO3−BiScO3 Physical Review B: Condensed Matter and Materials Physics, 93 (10). ISSN 2469-9950
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Official URL: http://doi.org/10.1103/PhysRevB.93.104103
Related URL: http://dx.doi.org/10.1103/PhysRevB.93.104103
Abstract
A comparative study of field-induced domain switching and lattice strain was carried out by in situ electric-field-dependent high-energy synchrotron x-ray diffraction on a morphotropic phase boundary (MPB) and a near-MPB rhombohedral/pseudomonoclinic composition of a high-performance piezoelectric alloy (1−x) PbTi O3−(x) BiScO3. It is demonstrated that the MPB composition showing large d33 ∼ 425 pC/N exhibits significantly reduced propensity of field-induced domain switching as compared to the non-MPB rhombohedral composition (d33 ∼ 260pC/N) . These experimental observations contradict the basic premise of the martensitic-theory-based explanation which emphasizes on enhanced domain wall motion as the primary factor for the anomalous piezoelectric response in MPB piezoelectrics. Our results favor field-induced structural transformation to be the primary mechanism contributing to the large piezoresponse of the critical MPB composition of this system.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 122976 |
Deposited On: | 01 Sep 2021 05:30 |
Last Modified: | 01 Sep 2021 05:30 |
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