Barium titanate
[CAS# 12047-27-7]

Identification

• Classification: Inorganic chemical industry >> Inorganic salt >> Metal oxide acid salt
• Name: Barium titanate
• Synonyms: Barium titanate(IV)
• Molecular Formula: BaTiO₃
• Molecular Weight: 233.20
• CAS Registry Number: 12047-27-7
• EC Number: 234-975-0
• SMILES: [O-][Ti](=O)[O-].[Ba+2]

Properties

• Density: 6.08
• Melting point: 1625 °C
• Water solubility: INSOLUBLE

Safety Data

• Hazard Symbols: GHS07 Warning
• Risk Statements: H302+H332
• Safety Statements: P261-P264-P270-P271-P304+P340-P330-P301+P312-P312-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	4	H302
Acute toxicity	Acute Tox.	4	H332
Specific target organ toxicity - repeated exposure	STOT RE	2	H373

Discovery and Applications

Barium titanate (BaTiO3) is an inorganic compound that belongs to the class of perovskite materials. It was first synthesized in the mid-20th century and quickly became of great interest due to its unique dielectric, piezoelectric, and ferroelectric properties. Barium titanate's discovery marked a significant advancement in materials science, particularly in the field of electronics, where materials with high dielectric constants were highly sought after for capacitors and other electronic components.

The synthesis of barium titanate typically involves the solid-state reaction of barium carbonate and titanium dioxide at high temperatures. The resulting material forms a crystalline structure that exhibits remarkable dielectric behavior. One of the key properties of barium titanate is its ability to change its polarization when exposed to an electric field, a characteristic that has made it indispensable in many modern technologies.

One of the main applications of barium titanate is in the production of multilayer ceramic capacitors (MLCCs). These capacitors are essential components in electronic devices, providing stability and efficiency in circuits. Barium titanate’s high dielectric constant allows MLCCs to store significant amounts of charge while maintaining a small size, making them ideal for use in smartphones, computers, and other portable electronics.

Barium titanate is also widely used in the manufacture of piezoelectric devices. Its ability to generate an electric charge in response to mechanical stress makes it suitable for use in sensors, actuators, and transducers. These devices are employed in various industries, from automotive systems to medical diagnostics, where precision and sensitivity are crucial. The material's ferroelectric properties have also led to its use in non-volatile memory devices, where data storage relies on the polarization states of materials like barium titanate.

In addition to its electronic applications, barium titanate is used in the development of electro-optic devices, such as light modulators and optical switches. Its optical properties can be modulated by applying an electric field, making it useful in telecommunications and laser technologies.

References

2024. The Introduction of a BaTiO3 Polarized Coating as an Interface Modification Strategy for Zinc-Ion Batteries: A Theoretical Study. International Journal of Molecular Sciences.
DOI: 10.3390/ijms252011172

2024. Doxorubicin-loaded core@shell cobalt ferrite-barium titanate magnetoelectric nanofibers for improved anticancer activity. Biomedical Materials (Bristol, England).
DOI: 10.1088/1748-605x/ad971e

2024. Biomimetic-inspired piezoelectric ovalbumin/BaTiO3 scaffolds synergizing with anisotropic topology for modulating Schwann cell and DRG behavior. International Journal of Biological Macromolecules.
DOI: 10.1016/j.ijbiomac.2024.132394