Nanoscale retention‐loss dynamics of polycrystalline PbTiO3 nanotubes |
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| Authors: | Hyunwoo Choi Yunseok Kim Seungbum Hong Tae‐Hyun Sung Hyunjung Shin Kwangsoo No |
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| Institution: | 1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305‐701, Korea;2. Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA;3. Present address: Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA;4. Department of Electrical Engineering, Hanyang University, Seoul 133‐791, Korea;5. School of Advanced Materials Engineering, Kookmin University, Seoul 136‐732, Korea |
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| Abstract: | We observed the nanoscale retention dynamics of polycrystalline PbTiO3 nanotubes using piezoresponse force microscopy. We found that the retention loss of the nanodot domains on the nanotubes showed the stretched exponential relaxation behaviors with stretched exponential factor n being less than 1 (0.523 and 0.692), which are similar to the thin films. In addition, the nanodot domains showed a diverse relaxation time constant τ due to different remnant polarization of each dot domains. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
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| Keywords: | retention ferroelectrics nanotubes piezoresponse force microscopy PbTiO3 |
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