Diamond Structure: Obtaining X-Ray Reflection Planes

  • Thread starter Thread starter hayat
  • Start date Start date
  • Tags Tags
    Diamond Structure
hayat
Messages
4
Reaction score
0
Hi everybody...
I have a question and i hope u could help me.

Consider the diamond structure as simple cubic with 8 basis atoms. obtain the first two
planes contributing to x-ray reflection from the diamond structure.
 
Physics news on Phys.org
Hi is this home work question? It looks like that, then it should be posted i homework forum, and You should also post your work done, your thougts and ideas so that you can get help.

Iam nice now since it is your first post (also a moderator will move this thread so don't make a new one), so I give you a hint:

Start with the structure factor, and you know the postion for each of those 8 atoms in Sc-lattice- Then you look after which combinations of h.k and l that gives non zero structure factor.

http://www.iucr.ac.uk/iucr-top/comm/cteach/pamphlets/9/node2.html


Now try this, and post what you got if you don't think you are making progress and then we will help you from there. Also, try to learn a bit how to post things using latex, so that things becomes clearer for us all.

See this thread:
https://www.physicsforums.com/showthread.php?t=8997

Maybe it takes about an hour to learn, but it is worth it.

Now good luck!
 
From the BCS theory of superconductivity is well known that the superfluid density smoothly decreases with increasing temperature. Annihilated superfluid carriers become normal and lose their momenta on lattice atoms. So if we induce a persistent supercurrent in a ring below Tc and after that slowly increase the temperature, we must observe a decrease in the actual supercurrent, because the density of electron pairs and total supercurrent momentum decrease. However, this supercurrent...
Hi. I have got question as in title. How can idea of instantaneous dipole moment for atoms like, for example hydrogen be consistent with idea of orbitals? At my level of knowledge London dispersion forces are derived taking into account Bohr model of atom. But we know today that this model is not correct. If it would be correct I understand that at each time electron is at some point at radius at some angle and there is dipole moment at this time from nucleus to electron at orbit. But how...
Back
Top