Hi all
I have a complex oxide BaTi8-xGaxO16. What standards I should run?
Ga is the dopant. I guess I should run the sample without dopant BaTi8O16
as standard, or the simple oxide as BaO, TiO2 Ga2O3? or is the standard
necessary?
Also, I have colleage working on DFT, I assume the theoretical
You didn't say what you're trying to find out or even which edge you're doing
this at. That being the case, it's a little hard to know
what the best strategy is. A few things come to mind:
1. If you're looking for the environment of the Ga, then obviously, BaO
and Ti2O3 aren't terribly
I think that they study Ga K-edge because Ba L3 and Ti K overlap, hence, those
are very difficult to refine in such a complex system.
I also think that if your system is a solid solution (it was not obvious but it
is probably what you imply) then the environment of Ga will have a mixture of
Ti
It could be Ba K-edge, but you're right that trying to do EXAFS at the Ti edge
is probably a no-hoper. You get to k8.5 before you hit the Ba L3-edge,
which would just about be enough to get an average Ti-O distance and maybe
something about a second shell but not much more.
Anyway, more
