Journal
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volume 149, Issue 1, Pages 41-46Publisher
ELSEVIER
DOI: 10.1016/j.mseb.2007.12.003
Keywords
PbTiO3; nanotubes; photoluminescence; ferroelectricity
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PbTiO3 nanotube arrays have been synthesized via sot-gel template method, and their morphology and structures have been determined by scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The diameter and length of these nanotubes are about 300 nm and 50 mu m, respectively, and their wall thickness is typically several tens of nanometers. XRD data shows that as-prepared PTO nanotubes possess perovskite structure, and electron diffraction demonstrates that they are polycrystalline. Photoluminescence spectrum of PTO nanotubes reveals an intense and wide emission band centered at 505 nm. Polarization-electric field (P-E) response curves of PTO nanotube array were measured, and the hysteresis loops illustrate a room temperature ferroelectric characteristic of as-prepared PTO nanotubes. (C) 2007 Elsevier B.V. All rights reserved.
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