(2) A hypothetical tetrahedral crystal has the following lattice parameters: B = y = 90°. Please write the indices of all planes/directions that belong to the family of (i) {100} a = b = 0.40 nm, c = 0.5 nm, a = and (ii) <001>

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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(2) A hypothetical tetrahedral crystal has the
following lattice parameters:
B = y = 90°.
Please write the indices of all planes/directions that belong to the family of (i) {100}
a = b = 0.40 nm, c = 0.5 nm, a =
and (ii)
<001>
Transcribed Image Text:(2) A hypothetical tetrahedral crystal has the following lattice parameters: B = y = 90°. Please write the indices of all planes/directions that belong to the family of (i) {100} a = b = 0.40 nm, c = 0.5 nm, a = and (ii) <001>
Expert Solution
Step 1

Miller indices is a group of three numbers that indicates the orientation of a plane or set of parallel planes of atoms in a crystal. They are used to specify directions and planes.

Given,

a=b=0.40nm , c= 0.5nm  α=β=γ=90°

Here, a=b, but not equal to c, and all the angle are 90, therefore it belongs to the tetragonal crystal system.

The indices belongs to same family when they have same linear density same in all directions.

 

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