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Information @ a Glance

Contents on the CD Rom

• Barium titanate is an oxide of barium and titanium with the chemical formula BaTiO3.
• It is a ferroelectric ceramic material, with a photorefractive effect and piezoelectric properties.
• It has five phases as a solid, listing from high temperature to low temperature: hexagonal, cubic, tetragonal, orthorhombic, and rhombohedral crystal structure.
• It has the appearance of a white powder or transparent crystals. It is insoluble in water and soluble in concentrated sulfuric acid.
• Barium titanate can be manufactured by liquid phase sintering of barium carbonate and titanium dioxide, optionally with other materials for doping.
• The barium titanate was prepared starting from barium oxide and titanium oxide.
• Barium titanate was synthesized from commercially available BaCO3 (99%, purity) and TiO2. For comparison, smaller TiO2 was used and the milling of BaCO3 was done in pulverizer for 50 h, prior of mixing with titania.
• Mechanical milling of BaCO3 results in spherical particles ensuring better mixing and decreases the reaction temperature which suppresses BaTiO3 particle growth and particle aggregation.
• BaTiO3 is a high-dielectric-constant material and is widely used in the manufacture of multilayer ceramic capacitors.
• Barium titanate is a ferroelectric crystal whose outstanding electrical and optical properties make it an important material for numerous applications.
• Barium titanate is used as a dielectric material for ceramic capacitors, and as a piezoelectric material for microphones and other transducers.
• Barium titanate crystals find use in nonlinear optics. The material has high beam-coupling gain, and can be operated at visible and near-infrared wavelengths.
• Thin films of barium titanate display electro optic modulation to frequencies over 40 GHz.
• The pyroelectric and ferroelectric properties of barium titanate are used in some types of uncooled sensors for thermal cameras.
• Barium titanates high relative permittivity characteristics were found in later period in several different parts of the world independently. Since that time barium titanate has become one of the most researched dielectric materials and one of the most widely used for small discrete components.
• Raman spectroscopy, like XRD, has proven a very powerful tool in the analysis of many different aspects of barium titanate.
• Recently the Raman method has been successfully used to determine dielectric constant for loose powder barium titanate.

• Barium Titanate information
• Barium titanate properties and applications

Process

• Effect of Mixing Condition on Sol-Gel Synthesis of Barium Titanate Ultrafine Particles
• Highly preferred oriented lead barium titanate thin films using acetylacetone as chelating agent in a sol gel process
• Microstructure and Properties of Barium Titanate Ceramics Prepared by Mechanochemical Synthesis
• Photo chemical reduction and oxidation reactions on barium titanate surfaces
• Nanostructured barium titanate prepared through a modified reverse micellar route: Structural distortion and dielectric properties
• Aqueous Processing of Barium Titanate Powders
• Single-crystal barium titanate thin films by ion slicing
• Synthesis of Nano-sized Barium Titanate Powder by Solid-state Reaction between Barium Carbonate and Titania
• Mechanochemical synthesis of barium titanate

Patent & Technology

• Electrical properties of barium titanate ferroelectric thin films fabricated by rf magnetron sputtering for memory devices application
• Barium Titanate Materials in Ferroelectric Applications
• Nanoscale Patterning of Barium Titanate on Block Copolymers
• Optimisation of barium titanate slip for tape casting
• Thick-Film Capacitors Prepared From Sol-Gel Derived Barium Titanate Glass-Ceramics

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