Hydrothermal growth of textured Ba(x)Sr(1-x)TiO3 films composed of nanowires.
A novel method for synthesis of Barium Strontium Titanate (BST) films with a high degree of texture is developed with a two-step hydrothermal reaction and without the need for costly equipment. The dielectric constant and ferroelectric properties of the film can be tuned by varying the Ba : Sr molar ratio of the materials. The maximum ambient temperature dielectric constant of these BST films can reach 811 when the Ba molar fraction ("x" in BaxSr1-xTiO3) is 0.71, which corresponds with the tetragonal to cubic phase transition of the solid solution. The ferroelectric behavior of the Ba0.91Sr0.09TiO3 film is confirmed by atomic force microscopy (AFM).
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA. hsodano@ufl.edu.
Zhi
Z
Zhou
Haixiong
H
Tang
Yirong
Y
Lin
Henry A
HA
Sodano