Synthesis, structural and ferroelectric properties of barium titanate based glass-ceramic nano-composites

Abstract Novel glass-ceramic nano-composites based on BaTiO 3 –V 2 O 5 –Bi 2 O 3 glasses were prepared via heat-treatment at crystallization temperature (T cr ). The nanostructural and ferroelectric properties were investigated by differential scanning calorimeter (DSC), transmission electron microscope (TEM), X-ray diffraction (XRD) and dielectric measurements, respectively. It was shown by XRD and TEM studies that appropriate heat-treatment glasses can turn into glass-ceramic nano-composites consisting of crystallites smaller than 30 nm embedded in the glassy matrix. The observed dielectric constant of heat‐treated samples, showed average broad peak around 324 K. The average Curie temperature (T c ) observed around 324 K in the present system. This observation of these glass-ceramic nano-composites can be utilized to control T c by proper adjustment of BaTiO 3 content. This result, therefore, supports dipolar orientation and phase transition in the glass-ceramic samples dispersed with nanocrystalline BaTiO 3 . Such a feature can be used for industrial applications where the shape of the application article is a necessary requirement such as integrated capacitor.