Fundamental limitation to the magnitude of piezoelectric response of (001)pc textured K0.5Na0.5NbO3 ceramic

Journal Article · Wed Jan 01 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4874648· OSTI ID:1134653

Gupta, Shashaank ^[1]; Belianinov, Alex ^[1]; Okatan, Mahmut B ^[1]; Jesse, Stephen ^[1]; Kalinin, Sergei V ^[1]; Priya, Shashaank ^[2]

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1. ORNL
2. Virginia Tech

(001)pc textured K0.5Na0.5NbO3 (KNN) ceramic was found to exhibit a 65% improvement in the longitudinal piezoelectric response as compared to its random counterpart. Piezoresponse force microscopy study revealed the existence of larger 180 and non-180 domains for textured ceramic as compared to that of the random ceramic. Improvement in piezoresponse by the development of (001)pc texture is discussed in terms of the crystallographic nature of KNN and domain morphology. A comparative analysis performed with a rhombohedral composition suggested that the improvement in longitudinal piezoresponse of polycrystalline ceramics by the development of (001)pc texture is limited by the crystal structure.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1134653
• Journal Information: Applied Physics Letters, Vol. 104, Issue 17; ISSN 0003-6951
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English