Poling direction driven large enhancement in piezoelectric performance
- Authors
- Kiran, Raj; Kumar, Anuruddh; Kumar, Rajeev; Vaish, Rahul
- Issue Date
- Jul-2018
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Poling tuning; Sensing; Actuation; Transverse mode
- Citation
- SCRIPTA MATERIALIA, v.151, pp.76 - 81
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCRIPTA MATERIALIA
- Volume
- 151
- Start Page
- 76
- End Page
- 81
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/190862
- DOI
- 10.1016/j.scriptamat.2018.03.029
- ISSN
- 1359-6462
- Abstract
- This study proposes enhancement in piezoelectric performance by tuning the poling direction in polycrystalline ceramics. Theoretically, it has been proven that transverse piezoelectric strain coefficient (d(31)) and (d(31)(eff)/epsilon(eff)(33)) governing factors for actuation and sensing respectively, get modified by altering poling direction. Finally, different polycrystalline materials have been employed to explore the effect of poling orientation on sensing and actuation capabilities. Optimised orientations were calculated for case of sensing and actuation. Among all materials under study, maximum increment in d(31)(eff) and (d(31)(eff)/epsilon(eff)(33)) was observed for 0.3BaTiO(3) - 0.7NaNbO(3) (BT-Nb). d(31)(eff) and (d(31)(eff)/epsilon(eff)(33)) were as high as -356 pm/V and -0.152 pm/V respectively for BT-Nb at optimised orientation.
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