Hydrothermal synthesis of tetragonal BaTiO3 nanotube arrays with high dielectric performance.

Hydrothermal synthesis of tetragonal BaTiO3 nanotube arrays with high dielectric performance.

Journal of nanoscience and nanotechnology (2014-04-18)

Liming Wang, Xiangyun Deng, Jianbao Li, Xinxing Liao, Guoqing Zhang, Chunpeng Wang, Kuifan Su

ZUSAMMENFASSUNG

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.

MATERIALIEN

Produktnummer

Marke

Produktbeschreibung

467634

Sigma-Aldrich

Bariumtitanat(IV), nanopowder (cubic crystalline phase), <100 nm particle size (BET), ≥99% trace metals basis

208108

Sigma-Aldrich

Bariumtitanat(IV), powder, <3 μm, 99%

348791

Sigma-Aldrich

Titan, foil, thickness 0.127 mm, 99.7% trace metals basis

366994

Sigma-Aldrich

Titan, powder, <45 μm avg. part. size, 99.98% trace metals basis

267503

Sigma-Aldrich

Titan, foil, thickness 0.25 mm, 99.7% trace metals basis

745952

Sigma-Aldrich

Bariumtitanat(IV), nanopowder (cubic), 50 nm (SEM), 99.9% trace metals basis

338842

Sigma-Aldrich

Bariumtitanat(IV), powder, <2 μm, 99.5% trace metals basis

268496

Sigma-Aldrich

Titan, powder, −100 mesh, 99.7% trace metals basis

268526

Sigma-Aldrich

Titan, sponge, 1-20 mm, 99.5% trace metals basis

460400

Sigma-Aldrich

Titan, wire, diam. 0.25 mm, 99.7% trace metals basis

GF16031843

Titan, mesh, 100x100mm, nominal aperture 0.19mm, wire diameter 0.23mm, 60x60 wires/inch, open area 20%, twill weave

369489

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Titan, foil, thickness 2.0 mm, 99.7% trace metals basis

348848

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Titan, foil, thickness 0.025 mm, 99.98% trace metals basis

348805

Sigma-Aldrich

Titan, foil, thickness 0.5 mm, 99.99% trace metals basis

767506

Sigma-Aldrich

Titan, sputtering target, diam. × thickness 2.00 in. × 0.25 in., 99.995% trace metals basis

GF29374005

Titan, mesh, 100x100mm, nominal aperture 4.3mm, wire diameter 1.5mm, 4.4x4.4 wires/inch, open area 94%, platinized diamond mesh

460397

Sigma-Aldrich

Titan, foil, thickness 0.127 mm, ≥99.99% trace metals basis

267481

Sigma-Aldrich

Titan, foil, thickness 0.25 mm, 99.99% trace metals basis

266035

Sigma-Aldrich

Titan, wire, diam. 1.0 mm, 99.99% trace metals basis

305812

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Titan, 5-10 mm, ≥99.99% trace metals basis (purity exclusive of Na and K content)

348864

Sigma-Aldrich

Titan, wire, diam. 0.5 mm, 99.99% trace metals basis

267902

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Titan, wire, diam. 0.81 mm, 99.7% trace metals basis

GF31127712

Titan, rod, 10mm, diameter 50mm, 99.99+%

GF14990935

Titan, tube, 1000mm, outside diameter 10.3mm, inside diameter 8.7mm, wall thickness 0.8mm, annealed, 99.6+%

GF46592949

Titan, wire, straight, 1000mm, diameter 1.0mm, as drawn, 99.6+%

433667

Sigma-Aldrich

Titan, evaporation slug, diam. × L 6.3 mm × 6.3 mm, ≥99.99% trace metals basis

GF62977540

Titan, tube, 200mm, outside diameter 2.03mm, inside diameter 1.63mm, wall thickness 0.2mm, annealed, 99.6+%

GF13900205

Titan, tube, 100mm, outside diameter 0.51mm, inside diameter 0.35mm, wall thickness 0.08mm, annealed, 99.6+%

GF49264713

Titan, tube, 200mm, outside diameter 1.6mm, inside diameter 1.2mm, wall thickness 0.2mm, hard, 99.6+%

GF86399106

Titan, tube, 500mm, outside diameter 1.6mm, inside diameter 1.2mm, wall thickness 0.2mm, hard, 99.6+%