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1. Overview
Barium Titanate is a ferroelectric ceramic material with a perovskite crystal structure. It exhibits piezoelectric, pyroelectric, and dielectric properties, making it highly useful in electronics, energy storage, and other advanced technologies.
2. Key Applications
  • Electronics and Capacitors
    • Dielectric Material: Barium Titanate is widely used in the production of multilayer ceramic capacitors (MLCCs) due to its high dielectric constant.
    • Piezoelectric Devices: It is used in sensors, actuators, and transducers because of its piezoelectric properties.
  • Energy Storage
    • High-Energy Capacitors: Its high dielectric constant makes it suitable for energy storage applications in capacitors.
  • Electro-Optics
    • Nonlinear Optics: Barium Titanate is used in nonlinear optical devices, such as frequency doublers and modulators, due to its electro-optic properties.
  • Thermistors
    • Positive Temperature Coefficient (PTC) Thermistors: Barium Titanate is a key material in PTC thermistors, which are used for temperature sensing and overcurrent protection.
  • Ferroelectric Memory
    • Non-Volatile Memory: Its ferroelectric properties make it suitable for use in ferroelectric random-access memory (FeRAM) devices.
  • Ceramics and Composites
    • Advanced Ceramics: Barium Titanate is used in the production of high-performance ceramics for industrial and scientific applications.
    • Composite Materials: It is incorporated into composites to enhance their electrical and mechanical properties.
  • Photocatalysis
    • Water Splitting and Pollution Degradation: Barium Titanate is explored as a photocatalyst for environmental applications, such as water splitting for hydrogen production and degradation of organic pollutants.
  • Medical Devices
    • Ultrasonic Transducers: Its piezoelectric properties make it useful in medical imaging devices, such as ultrasonic transducers.
  • Research and Development
    • Material Science: Barium Titanate is extensively studied for its ferroelectric, piezoelectric, and dielectric properties, contributing to advancements in material science and nanotechnology.
3. Industrial and Commercial Uses
  • Consumer Electronics: Used in capacitors, sensors, and memory devices in smartphones, computers, and other electronic devices.
  • Automotive Industry: Employed in sensors, actuators, and energy storage systems in vehicles.
  • Renewable Energy: Investigated for use in energy storage and conversion systems, such as capacitors and photocatalysts.
4. Emerging Applications
  • Nanotechnology: Barium Titanate nanoparticles are being researched for use in nanoscale devices and sensors.
  • Energy Harvesting: Explored for piezoelectric energy harvesting systems to convert mechanical energy into electrical energy.
  • Smart Materials: Used in the development of smart materials with adaptive properties.
5. Handling and Processing
  • Sintering: Barium Titanate is typically processed at high temperatures to achieve the desired crystalline structure and properties.
  • Doping: It is often doped with other elements (e.g., strontium, calcium) to modify its electrical and thermal properties for specific applications.

CHM.14971 - Barium Titanate - powder, <3 μm, 99% - CAS:12047-27-7

SKU: CHM.14971
€48.00Price
Quantity
Will ship from Malta 7-14 days.

  • 1. General Information

    • Chemical Name: Barium Titanate

    • CAS Number: 12047-27-7

    • Molecular Formula: BaTiO₃

    • Molecular Weight: 233.192 g/mol

    • Appearance: White crystalline solid

    2. Crystal Structure

    • Structure Type: Perovskite (ABO₃ type)

    • Crystal System: Tetragonal at room temperature (ferroelectric phase)

    • Phase Transitions:

      • Transforms from cubic (paraelectric) to tetragonal (ferroelectric) at around 120°C (Curie Temperature).

      • Further transitions to orthorhombic and rhombohedral phases occur at lower temperatures.

    3. Solubility

    • Water: Insoluble in water.

    • Acids: Soluble in strong acids (e.g., hydrochloric acid, sulfuric acid), decomposing to release barium and titanium ions.

    • Organic Solvents: Insoluble in most organic solvents.

    4. Thermal Properties

    • Melting Point: Approximately 1625°C.

    • Thermal Stability: Stable under normal conditions but decomposes at high temperatures.

    • Thermal Conductivity: Relatively low, typical of ceramic materials.

    5. Electrical Properties

    • Dielectric Constant: Very high (typically in the range of 1000–5000), depending on temperature and frequency.

    • Ferroelectricity: Exhibits ferroelectric behavior below its Curie temperature (~120°C).

    • Piezoelectricity: Shows strong piezoelectric effects, making it useful in sensors and actuators.

    • Pyroelectricity: Exhibits pyroelectric properties, generating electric charge in response to temperature changes.

    6. Chemical Stability

    • Stability: Chemically stable under normal conditions.

    • Reactivity:

      • Reacts with strong acids, releasing barium and titanium ions.

      • Resistant to alkalis and weak acids.

      • May react with reducing agents at high temperatures.

    7. Optical Properties

    • Refractive Index: High refractive index, making it useful in optical applications.

    • Transparency: Opaque in its polycrystalline form but can be transparent in thin-film or single-crystal forms.

    8. Magnetic Properties

    • Magnetic Behavior: Diamagnetic (non-magnetic).

    9. Mechanical Properties

    • Hardness: Relatively hard ceramic material.

    • Density: ~6.02 g/cm³.

    10. Chemical Compatibility

    • Incompatibilities:

      • Strong acids (e.g., hydrochloric acid, sulfuric acid).

      • Strong oxidizing agents.

      • Reducing agents at high temperatures.

    • Compatibility:

      • Stable with most organic and inorganic materials under normal conditions.

    11. Environmental Behavior

    • Environmental Fate: Insoluble in water, so it is unlikely to leach into the environment under normal conditions.

    • Toxicity: Barium Titanate itself is not highly toxic, but barium compounds can be harmful if ingested or inhaled as dust.

    12. Synthesis and Processing

    • Synthesis Methods:

      • Solid-state reaction of barium carbonate (BaCO₃) and titanium dioxide (TiO₂) at high temperatures.

      • Sol-gel method for producing fine powders.

      • Hydrothermal synthesis for nanoparticles.

    • Doping: Often doped with elements like strontium (Sr), calcium (Ca), or lead (Pb) to modify its electrical and thermal properties.

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