Synthesis and ferroelectric properties of Nd doped multiferroic BiFeO3 nanotubes

Abstract

Nd doped multiferroic BiFeO 3 (Bi 0.94 Nd 0.06 FeO 3 (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. multiferroic BiFeO 3 , Nd 3+ doping, nanotubes, sol-gel technique, ferroelectricity Citation: Wang J, Li M Y, Liu X L, et al. Synthesis and ferroelectric properties of Nd doped multiferroic BiFeO 3 nanotubes.

Controllable Microwave Hydrothermal Synthesis of Bismuth Ferrites and Photocatalytic Characterization

“…Currently there are many methods for preparing bismuth ferrites powders, such as the solid‐state method, the sol–gel method, the coprecipitation method and the hydrothermal method . However, it is hard to prepare pure phases of either Bi 25 FeO 40 or BFO, or Bi 25 FeO 40 –BFO mixtures with specific ratios through the above methods, but it can be achieved by a microwave hydrothermal (MH) method.…”

Structure, ferroelectric/magnetoelectric properties and leakage current density of (Bi0.85Nd0.15)FeO3 thin films

“…Therefore, it allows current to pass through when a high voltage is applied [22][23][24]. Currently, great efforts have been made to improve electrical properties by doping with rare-earth elements such as: lanthanum [25][26][27][28][29], praseodymium [30,31], samarium [32][33][34][35], europium [36][37][38][39], gadolinium [40,41], dysprosium [42,43] and neodymium (Nd) [44][45][46][47][48]. Among these rare-earth elements, the employment of Nd as a dopant in BiFeO 3 thin films/ceramics has shown an improvement in ferroelectric and ferromagnetic properties [49,50].…”

Dielectric properties of spinel ceramic Fe1.8V1.2O4

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