title: Hydrothermal synthesis of tetragonal BaTiO3 nanotube arrays with high dielectric performance.
abstract: Tetragonal Barium titanate (BaTiO3) nanotube arrays have been prepared using the template-assisted hydrothermal method combined with an annealing process. The in-situ chemical conversion of TiO2 nanotube array templates ensured that BaTiO3 maintained the morphology of the nanotube architectures. Moreover, X-ray diffraction and Raman spectrum characterization were used to confirm that the BaTiO3 nanotube arrays had a tetragonal phase after the use of a simple annealing technique. Typical hysteresis loops showed their ferroelectricity, with the remanent polarization and coercive fields being 2.57 microC/cm2 and 2.52 kV/cm, respectively. The relative dielectric constant of the tetragonal BaTiO3 nanotube arrays reached up to 1000 and the dielectric loss was as low as 0.02 at 1 kHz at room temperature.
authors.forename: Liming
authors.initials: L
authors.lastname: Wang
authors.forename: Xiangyun
authors.initials: X
authors.lastname: Deng
authors.forename: Jianbao
authors.initials: J
authors.lastname: Li
authors.forename: Xinxing
authors.initials: X
authors.lastname: Liao
authors.forename: Guoqing
authors.initials: G
authors.lastname: Zhang
authors.forename: Chunpeng
authors.initials: C
authors.lastname: Wang
authors.forename: Kuifan
authors.initials: K
authors.lastname: Su
mesh_terms: D017609:Barium Compounds / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D017097:Electric Impedance; D006358:Hot Temperature; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D017609:Barium Compounds; D014867:Water; C024547:barium titanate(IV); D014025:Titanium