Dear all,
Are there anybody experienced in stacking faults? Please help me!
Basically I'm following Warren's book and R. Berliner's paper to simulate
the possible effects of stacking faults on diffraction patterns. I did generate
a set of patterns for fcc, but there are some questions I'm not
clear:
1 What is the relation of (hkl) between the cubic fcc and the
hexagonal lattice cell, for example, what does this (1 0 1/3) stand for in the
orginal cubic cell? All those papers use the distance between layers
as the c value, i.e., A=-a/2+b/2, B=-b/2+c/2, C=(a+b+c)/3, the original (111)
plane will be (-1 1 3). I don't know what is this l=1/3 or 2/3 stand for.
2 Besides peak broadening and peak position shifting, are there other
effects by the long-range one-dimensinal disorderness? Is it possible to
get superlattice peaks which have bigger d-space than the original cell? Should
I set a superlattice layer sequence first, e.g., the fcc sequence is ABCABC...,
should i set a sequence like ABCDEFABCDEF... as a model for simulation, so that
extra peaks will appear?
Please please help. Thanks greatly.
Sincerely,
Ling Yang Dept of CME, Univ of Cincinnati Current address: Bldg 8600, MS 6474 SNS, Oak Ridge National Laboratory Oak Ridge, TN 37830 Tel: 865 574 0350 Fax: 865 241 5177 |
- Re: A question about stacking faults ling yang
- Re: A question about stacking faults Brian H. Toby
- Re: A question about stacking faults Andreas Leineweber