Crystal Structure of TiO2 and Aluminum Nitride

In summary, the crystal structure of TiO2, or titanium dioxide, can exist in three different forms (anatase, rutile, and brookite) which determine its properties such as color and UV-blocking capabilities. On the other hand, aluminum nitride has a hexagonal crystal structure, giving it excellent thermal conductivity and high melting point. While the crystal structures of TiO2 and aluminum nitride are different, both materials have strong bonds and can be modified for different applications in electronics, optics, and catalysis.
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ralden
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Hey guys, I'm actually had a hard time in figuring out about our assignment in crystallography of semiconductors, the problem said that, Identify the atomic line lattice axes in a, b,c axis and basal plane diagonal, face plane diagonal, and body plane diagonal of TiO2 and Aluminum Nitride. Please explain it elaborately and provide general rules (if there is) in determining atomic line lattice axes. thanks.
 
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Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
 

1. What is the crystal structure of TiO2?

TiO2, or titanium dioxide, typically exists in three different crystal structures: anatase, rutile, and brookite. These structures are determined by the arrangement of the titanium and oxygen atoms in the lattice.

2. How does the crystal structure of TiO2 affect its properties?

The crystal structure of TiO2 plays a significant role in determining its properties, such as its color, hardness, and optical properties. For example, rutile TiO2 is a white pigment commonly used in paints, while anatase TiO2 is often used in sunscreen for its UV-blocking properties.

3. What is the crystal structure of aluminum nitride?

Aluminum nitride has a hexagonal crystal structure, where each aluminum atom is surrounded by six nitrogen atoms, forming a hexagonal lattice. This structure gives aluminum nitride excellent thermal conductivity and high melting point, making it useful in applications such as heat sinks and semiconductor devices.

4. How do the crystal structures of TiO2 and aluminum nitride compare?

The crystal structures of TiO2 and aluminum nitride are quite different, with TiO2 existing in three different structures (anatase, rutile, and brookite) while aluminum nitride has only one (hexagonal). However, both materials have strong bonds between atoms, making them resistant to high temperatures and chemical corrosion.

5. Can the crystal structures of TiO2 and aluminum nitride be modified?

Yes, the crystal structures of TiO2 and aluminum nitride can be modified through processes such as doping or doping and annealing. These modifications can alter the properties of the materials, making them suitable for various applications in electronics, optics, and catalysis.

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