Preparation of Barium Titanate Nanoparticle Sphere Arrays and Their Dielectric Properties

Barium titanate (BaTiO₃) nanoparticles from 27 to 192 nm were prepared by the 2-step thermal decomposition method from barium titanyl oxalate nanoparticles. These particles were dispersed well into 1-propanol and dence BaTiO₃ nanoparticle sphere arrays without stress-field were prepared by the meniscus method. Temperature dependence of dielectric properties were successfully measured using these dense nanoparticle sphere arrays and size effect on dielectric properties was discussed.