IngentaConnect Fast Track Article: Fabrication of BaTiO<sub>3</sub>-...anocrystalline seeding technique

Abstract:

This paper describes a method for fabricating dielectric BaTiO₃ (BT) micropatterns seeded with BT nanocrystalline particles and Y:Eu compound nanoparticles. The method is a combination of a laser induced pyrolysis method and a nanocrystalline seeding technique. The BT particles were prepared by hydrolysis of BT complex alkoxide with polyvinylpyrollidone (PVP). The Y:Eu particles were prepared by homogeneous precipitation of Y(NO₃)₃ and Eu(NO₃)₃ with PVP. A precursor film was fabricated spin-coating a solution containing BT complex alkoxide, the BT particles, the Y:Eu particles and PVP on Pt substrate. A micropattern with a line width of about 1–2 µm was fabricated by irradiating an Ar⁺ laser beam on the film, and then stripping laser unirradiated region with HCl aqueous solution. The micropattern containing 5 vol.-% BT particles and 5 vol.-% Y:Eu particles revealed luminescence at 614 nm derived from Eu³⁺. Its dielectric constant and dissipation factor attained 21.2 and 0.089 respectively.

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Fabrication of BaTiO3-Y:Eu composite micropatterns by combination of laser induced pyrolysis method and nanocrystalline seeding technique

Fabrication of BaTiO₃-Y:Eu composite micropatterns by combination of laser induced pyrolysis method and nanocrystalline seeding technique