Interplanar distance refers to the distance between two parallel planes of atoms or molecules in a crystal lattice. It is an important parameter in materials science as it affects the properties and behavior of materials.
Interplanar distance can be calculated using the Bragg Equation, which states that the distance between two planes is equal to the wavelength of the incident X-ray or electron beam divided by twice the sine of the angle of diffraction.
The lattice parameter is the distance between the lattice points in a crystal structure. The interplanar distance is directly related to the lattice parameter and can be calculated by dividing the lattice parameter by the square root of the sum of the squares of the Miller indices of the planes.
Interplanar distance can be obtained experimentally through techniques such as X-ray diffraction or electron diffraction. These methods involve shining a beam of X-rays or electrons onto a sample, and the resulting diffraction pattern can be used to calculate the interplanar distance.
The interplanar distance can be affected by various factors, including temperature, pressure, and the presence of impurities. Changes in these factors can cause the lattice to expand or contract, resulting in a change in the interplanar distance.