Why does (100) and (010) have the shortest reciprocal lattic

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In summary, the lattice vectors of (100) and (010) are perpendicular to each other, resulting in a square unit cell with the shortest distance between lattice points and the smallest reciprocal lattice volume. The orientation of the lattice affects the size and shape of the reciprocal lattice, with (100) and (010) being the most common orientations with the shortest reciprocal lattice. However, other orientations such as (110) and (011) can also have a shorter reciprocal lattice. The reciprocal lattice is significant in crystallography as it helps determine the diffraction pattern and provides information about the symmetry and structure of the crystal. It is also important in studying crystal structures as it allows for the determination of key properties such as unit cell dimensions, symmetry
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Armani
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Can anyone explain why the two planes (100) and (010) in the HCP structure have the shortest reciprocal lattice vectors?
I mean it says {001}, but why is (001) not included?
 
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In the HCP structure you stack alternating layers in a ABAB... sequence. The (001) d-spacing is the distance between two A layers, and that is larger than the (100) d-spacing which is simply the diameter of the (hypothetical) spheres you stack.
 
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1. Why do (100) and (010) have the shortest reciprocal lattice?

The lattice vectors for (100) and (010) are perpendicular to each other, resulting in the shortest distance between lattice points. This creates a square unit cell, which has the smallest reciprocal lattice volume.

2. How does the orientation of the lattice affect the reciprocal lattice?

The orientation of the lattice determines the angles and lengths of the lattice vectors, which in turn affects the size and shape of the reciprocal lattice. (100) and (010) are perpendicular to each other, creating a square unit cell with the shortest reciprocal lattice.

3. Can other lattice orientations have a shorter reciprocal lattice?

Yes, there are other lattice orientations that can have a shorter reciprocal lattice, such as (110) and (011). However, (100) and (010) are the most common orientations used in crystallography and have the shortest reciprocal lattice in those cases.

4. What is the significance of the reciprocal lattice in crystallography?

The reciprocal lattice is important in crystallography because it helps determine the diffraction pattern produced by a crystal. It also provides information about the symmetry and structure of the crystal, which is essential in understanding its physical and chemical properties.

5. Why is the reciprocal lattice important in studying crystal structures?

The reciprocal lattice is important in crystal structure studies because it allows scientists to easily determine the crystallographic properties of a material, such as its unit cell dimensions, symmetry, and atomic arrangement. This information is crucial in understanding the behavior and properties of materials used in various fields, such as materials science, physics, and chemistry.

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