Neutron scattering - determing the magnetic moment for MnO

880
0
I'm told that the MnO crystal resembles in structure that of NaCl (FCC) with lattice constant a, and am first asked to write a general expression for the position vector Rj of the ion j in the unit cell of MnO. I am then asked to find the vector K for MnO in order to use the relation μj0e(iK⋅Rj) to determine the magnetic moment of an ion at the position Rj.

I initially wrote down the unit cell vectors for one of the two atoms, and added to these a basis (due to the second atom): a1=a/2(x^+y^),a2=a/2(x^+z^),a3=a/2(y^+z^), with basis: d1=0,d2=a/2(x^+y^+z^).
How am I to formulate the expression for the general position vector Rj? Would it simply be a linear combination of all these vectors? Next, for determining the value of the vector K, need I to first find the reciprocal lattice?
I'd appreciate some explicit assistance/guidance.
 

Want to reply to this thread?

"Neutron scattering - determing the magnetic moment for MnO" You must log in or register to reply here.

Related Threads for: Neutron scattering - determing the magnetic moment for MnO

  • Posted
Replies
0
Views
2K
  • Posted
Replies
0
Views
2K
Replies
0
Views
2K
Replies
0
Views
1K
Replies
0
Views
2K
Replies
0
Views
2K
Replies
0
Views
2K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top