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Nanoscale. 2013 Nov 21;5(22):10901-7. doi: 10.1039/c3nr01982a. Epub 2013 Sep 23.

Hydrothermal growth of textured Ba(x)Sr(1-x)TiO3 films composed of nanowires.

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  • 1Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA.


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).

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