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.
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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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Momeni, K., Asthana, A., Prasad, A. et al. Structural inhomogeneity and piezoelectric enhancement in ZnO nanobelts. Appl. Phys. A 109, 95–100 (2012). https://doi.org/10.1007/s00339-012-7081-5
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DOI: https://doi.org/10.1007/s00339-012-7081-5