Synthesis, characterization, photoluminescence and ferroelectric properties of PbTiO₃ nanotube arrays

详细信息	查看全文 | 推荐本文 |

• 作者：Lifeng Liu ; Tingyin Ning ; Yan Ren ; Zhihui Sun ; Feifei Wang ; Weiya Zhou ; Sishen Xie ; Li Song ; Shudong Luo ; Dongfang Liu ; Jun Shen ; Wenjun Ma ; Yueliang Zhou
• 关键词：PbTiO₃ ; Nanotubes ; Photoluminescence ; Ferroelectricity
• 刊名：Materials Science and Engineering ; B
• 出版年：2008
• 期刊代码：76_09215107
• 类别：ch
• 出版时间：15 March 2008
• 卷：149
• 期：1
• 页码：41-46
• 文件大小：1123 K

摘要

PbTiO₃ nanotube arrays have been synthesized via sol–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 μm, 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.