Large coercivity and polarization of sol-gel derived BaTiO3 nanowires
Abstract
BaTiO3 nanowires were grown in an amorphous aluminum oxide membrane from a sol-gel via electrophoresis. These had a ferroelectric coercive field of 5 kV/mm after undergoing a thermal treatment. This value is 12-16 times larger than the bulk value. Such enhancements are in agreement with local PFM measurements by others. An enhanced polarization of ≈80 μC/cm2 was also measured, where the bulk is around 26 μC/cm2. In addition, low leakage currents were also observed.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- September 2011
- DOI:
- 10.1063/1.3641986
- Bibcode:
- 2011JAP...110f4112B
- Keywords:
-
- barium compounds;
- dielectric polarisation;
- electrophoresis;
- ferroelectric coercive field;
- leakage currents;
- nanofabrication;
- nanowires;
- sol-gel processing;
- 81.07.Gf;
- 81.20.Fw;
- 77.22.Ej;
- 77.80.Dj;
- Sol-gel processing precipitation;
- Polarization and depolarization;
- Domain structure;
- hysteresis