J. Mater. Sci. Technol. ›› 2014, Vol. 30 ›› Issue (8): 743-747.

• Orginal Article • Previous Articles     Next Articles

Dielectric and Ferroelectric Properties of BaTiO3 Nanofibers Prepared via Electrospinning

Yan Wei1, *, Yu Song2, Xuliang Deng1, Bing Han1, Xuehui Zhang2, Yang Shen2, **, Yuanhua Lin3   

  1. 1.Department of Geriatric Dentistry, School and Hospital of Stomatology, Peking University, Beijing 100081, China; 2. School of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
  • Received:2013-08-15 Online:2014-05-20 Published:2014-09-30
  • Contact: * Corresponding author. Ph.D.; E-mail address: kqdxl@bjmu.edu.cn (Y. Wei);** Corresponding author. Prof., Ph.D.; Tel.: þ86 10 62773300; E-mail address: shyang_mse@tsinghua.edu.cn (Y. Shen).

Abstract: BaTiO3 nanofibers of about 400 nm in diameter were synthesized via electrospinning. The evolution of the morphology and phase composition of the BaTiO3 nanofibers was studied by scanning electron microscopy and X-ray diffraction within the annealing temperature of 750e1050 o C. Higher annealing temperature led to rougher surface and better crystallization of the BaTiO3 nanofibers. Below 1050oC, the BaTiO3 nanofibers maintained its large aspect ratios and could still be regarded as individual nanofiber. The dielectric permittivities of the BaTiO3 nanofibers (εr~820) were calculated with the MG equation by considering the porous bulk specimens as composites of BaTiO3 nanofibers and air. The ferroelectric properties of the BaTiO3 nanofibers were measured by using a ferroelectric analyzer coupled with an atomic force microscope. P-E loop measured for the BaTiO3 nanofiber exhibits small hysteresis.

Key words: Dielectric, Ferroelectric, Barium titanate, Electrospinning