Structural inhomogeneity and piezoelectric enhancement in ZnO nanobelts
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Abstract
In this work, piezoelectricity of individual ZnO nanobelts grown along the [0 1 ī 0] direction is studied using piezoresponse force microscopy (PFM). It is found that the effective piezoelectric coefficient of these NBs, \(d_{33}^{\mathrm{eff}}\), is increasing from 2.7 pm/V at 30 kHz to 44 pm/V at 150 kHz. The results were explained by the Debye model, where structural inhomogeneity in our NBs was shown to be responsible for piezoelectric enhancement.
Keywords
Piezoelectric Property Relaxation Behavior Piezoelectric Coefficient Debye Model Periodically Pole Lithium Niobate
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Notes
Acknowledgements
The authors would like to thank NSF-CMMI Grant no. 0926819 and NSF-DMR Grant no. 0820884 for providing the financial support.
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