Octahedral rotation angle in Perovskite

In summary, an octahedral rotation angle in perovskite is a measure of the rotation of oxygen octahedra, and is important in perovskite research due to its influence on properties and functionality. It is measured using X-ray diffraction and can be affected by factors such as composition, size, and external forces. Controlling this angle has potential applications in solar cells, LEDs, sensors, and other electronic devices, as well as in the development of new materials.
  • #1
sohaib85
1
0
Hi, Can anybody tell me that is the formula to calculate the octahedral rotation angle in Perovskite.
for example in SrTiO3, the TiO6 Octahedral angle. When SrTiO3 goes from Cubic to Tetragonal, this TiO6 Octahedral tilt. I have to find this angle.
Thanks
 
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  • #2
in advance.The formula for calculating the octahedral rotation angle in a perovskite is given by: θ = arccos(1/3*[2(cosα + cosβ + cosγ) - 2]) where α, β, and γ are the angles of the octahedron with respect to the x, y, and z axes respectively. For SrTiO3, the octahedral rotation angle is approximately 34.3°.
 

FAQ: Octahedral rotation angle in Perovskite

What is an octahedral rotation angle in perovskite?

An octahedral rotation angle in perovskite is a measure of the rotation of the oxygen octahedra, which are a key structural component of perovskite crystals. It is a measure of the distortion or tilt of the octahedra from their ideal orientation.

Why is the octahedral rotation angle important in perovskite research?

The octahedral rotation angle is important because it can greatly influence the properties of perovskite materials. It can affect the electronic, optical, and magnetic properties, as well as the stability and functionality of perovskite crystals.

How is the octahedral rotation angle measured in perovskite crystals?

The octahedral rotation angle is typically measured using X-ray diffraction techniques. This involves shining X-rays onto a perovskite crystal and analyzing the resulting diffraction pattern to determine the orientation and distortion of the octahedra.

What factors can affect the octahedral rotation angle in perovskite crystals?

There are several factors that can influence the octahedral rotation angle in perovskite crystals. These include the composition and size of the perovskite crystal, the temperature and pressure during crystal growth, and the presence of external forces or stresses.

What are the potential applications of controlling the octahedral rotation angle in perovskite materials?

Controlling the octahedral rotation angle in perovskite materials has the potential to enhance the performance and functionality of these materials in a variety of applications. This includes use in solar cells, LEDs, sensors, and other electronic devices. It can also lead to the development of new materials with unique properties and applications.

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