Bismuth silicon oxide

File:Bismuth silicon oxide structure.png
Properties	|-| | Density || 9.2 g/cm3 |-| | Melting point || 890 °C |-| | Boiling point || |-| | Thermal conductivity || |-| | Electrical resistivity ||
Discovered by	[[]]

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Bismuth Silicon Oxide, also known as BSO, is a complex oxide material with the chemical formula Bi<sub>12</sub>SiO<sub>20</sub>. It is a member of the sillenite group of compounds and is known for its unique electro-optic and photorefractive properties.

Structure and Properties

Bismuth Silicon Oxide crystallizes in a cubic structure and belongs to the space group I23. The structure is characterized by a three-dimensional network of BiO<sub>6</sub> octahedra and SiO<sub>4</sub> tetrahedra. This arrangement gives BSO its distinctive optical properties.

BSO is a photorefractive material, meaning it can change its refractive index in response to light. This property makes it useful in various optical applications, such as holography and optical data storage. The material also exhibits a high electro-optic coefficient, which is beneficial for modulating light in electro-optic devices.

Applications

Bismuth Silicon Oxide is used in several advanced technological applications:

• Holography: BSO's photorefractive properties make it ideal for recording and reconstructing holograms.
• Optical Data Storage: The ability to change refractive index with light allows for high-density data storage solutions.
• Electro-optic Devices: BSO is used in devices that require modulation of light, such as optical switches and modulators.

Synthesis

BSO can be synthesized using various methods, including the Czochralski process, which involves melting the constituent oxides and slowly cooling them to form single crystals. This method allows for the production of high-quality crystals suitable for optical applications.

See Also

• Photorefractive effect
• Electro-optic effect
• Holography
• Optical data storage