Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Can anyone tell me formula for lattice constants $a$, $b$ and $c$ in a hexagonal structure? $a$ , $b$ and $c$ are units cell of structure. As we see in cubic structure we have a formula to calculate side $a$, $b$ and $c$ method known as braggs law. So what should be the method for calculating it in a hexagonal structure. I want to define the XRD (X-Ray diffraction) structure of my crystal.

share|cite|improve this question
Hello! Please clarify your question . – ABC Mar 29 '13 at 15:00
more answer needed – ghanendra Mar 30 '13 at 7:18
up vote 1 down vote accepted

I still don't understand what your question is about, but e.g. this paper contains everything about the real and reciprocal lattice of a hexagonal structure (on the first 1.5 pages).

"Unit cell of structure" is not a common term; I think you are referring to the lattice constants, of which graphene has only one, not three.

share|cite|improve this answer
thanks for your help. – ghanendra Mar 29 '13 at 15:08
If you think your question is answered, you should click the "accept" symbol to the left of this answer. – Rafael Reiter Mar 29 '13 at 15:09
no i have not got the answer. i will do it answered when i get a conclusion. – ghanendra Mar 29 '13 at 15:11

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.