Gold‐Particle‐Enhanced Crystallite Growth of Thin Films of Barium Titanate Prepared by the Sol‐Gel Process

Abstract

The effects of gold-particle incorporation on the structure of barium titanate (BaTiO 3 ) thin films was investigated. BaTiO 3 thin films (110 nm thick) with different gold concentrations were prepared via sol-gel processing and analyzed using X-ray diffractometry. The diffraction results showed that the crystal structure of the thin films changed from predominantly the cubic phase to the tetragonal phase, and the crystallite size increased as the gold concentration increased. Possible mechanisms for the goldenhanced crystallization have been discussed.

Sinterability studies and microwave dielectric properties of sol–gel synthesized Ba(Zn1/3Ta2/3)O3 nanoparticles

“…Moreover, the particles are strongly agglomerated which may affect the properties of the final product [6,7]. To overcome these difficulties and to synthesize nanocrystalline fine particles at relatively lower temperatures, wet chemical methods are being employed [8][9][10]. Among the chemical methods, sol-gel synthe- * Corresponding author.…”

SPR enhanced photocatalytic properties of Au-dispersed amorphous BaTiO3 nanocomposite thin films

“…Among all metal NPs, gold is considered as one of the most effective dispersing elements for enhancing the photocatalytic property since it has a remarkable SPR effect and chemical stability [8]. On the other hand, BaTiO 3 with high dielectric constant and refractive index [21] has attracted much attention because of its excellent optical property [22], and the BaTiO 3 thin films can be incorporated with noble metal NPs such as Au. The relevant studies [21e25] about BaTiO 3 films dispersed by Au NPs have been reported, demonstrating an absorption peak due to the SPR effect of Au NPs.…”

Enhanced photocatalytic activity in Ag-nanoparticle-dispersed BaTiO3 composite thin films: Role of charge transfer

“…BaTiO 3 (BTO) has attracted much attention with respect to its high dielectric constant and refractive index [20,21], chemical stability, environmental benignity, and excellent optical property [22]. However, the photocatalytic activity of BTO is also suffered by its wide E g (~3.18 eV) [23], which has response only to UV light.…”