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Synthesis and ferroelectric properties of Nd doped multiferroic BiFeO3 nanotubes
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  • 分类:TQ174.758[化学工程—陶瓷工业;化学工程—硅酸盐工业] TF125.2[冶金工程—粉末冶金;冶金工程—冶金物理化学]
  • 作者机构:[1]Department of Electronic Science and Technology, School of Physical Science and Technology, Wuhan University, Wuhan 430072, China, [2]Key Laboratory of Acoustic and Photonic Material and Device of the Ministry of Education, Wuhan University, Wuhan 430072, China
  • 相关基金:This work was supported by the National Basic Research Program of China (2006CB932305) and National Natural Science Foundation of China (50872097).
  • 相关项目:Si基多铁同轴纳米管线及其阵列的制备与性能研究
中文摘要:

Nd 做了 multiferroic BiFeO3 (Bi0.94Nd0.06FeO3 (BNF )) nanotubes 被一个大音阶的第五音胶化模板方法成功地综合。电子显微镜学调查展出了那这些 nanotubes 与大约 200 nm 的直径和大约 20 nm 的墙厚度有直、光滑的侧面。BNF 的 perovskite 类型结构被高分辨率的传播电子显微镜学在 nanotubes 证实并且选择了区域电子衍射分析。这些 nanotubes 有高抵抗力。nanotubes 的绝缘的经常、绝缘的损失分别地在 1 MHz 是 126 和 0.040。这些 BNF nanotubes 的铁电体性质与 48 C/cm2 的残余极化和 163 kV/cm 的一个强制电场被表明。

英文摘要:

Nd doped multiferroic BiFeO3 (Bi0.94Nd0.06FeO3 (BNF)) nanotubes were successfully synthesized by a sol-gel template method. Electron microscopy investigations exhibited that these nanotubes had straight and smooth profile with diameters of about 200 nm and wall thickness of about 20 nm. A perovskite-type structure of BNF was confirmed in the nanotubes by high-resolution transmission electron microscopy and selected area electron diffraction analysis. These nanotubes had high resistivity. The dielectric constant and dielectric loss of the nanotubes were 126 and 0.040 at 1 MHz, respectively. The ferroelectric properties of these BNF nanotubes were demonstrated with a remnant polarization of 48 μC/cm^2 and a coercive electric field of 163 kV/cm.

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