Synthesis and ferroelectric properties of Nd doped multiferroic BiFeO_3 nanotubes  

作　　者：WANG Jing LI MeiYa LIU XiaoLian PEI Ling LIU Jun YU BenFang ZHAO XingZhong 

机构地区：[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

出　　处：《Chinese Science Bulletin》2010年第16期1594-1597,共4页

基　　金：supported by the National Basic Research Program of China (2006CB932305);National Natural Science Foundation of China (50872097)

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/cm2 and a coercive electric field of 163 kV/cm.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.

关 键 词：BIFEO3 碳纳米管 铁电性能 铁电薄膜 合成 电子显微镜观察 掺钕 钙钛矿型结构 

分 类 号：TB383.1[一般工业技术—材料科学与工程]