Yes, there are "virtualization solutions" for AIX. Several, in fact.
No, VMWare isn't one of them. VMWare only supports x86 architectures.
Yes, you'll probably need PowerPC hardware (e.g. a physical AIX box) in order to run a VM; just as you'd need an x86 PC (Windows or Linux) to run a VMWare image.
So "Yes, there is"
... but ..
"No, it's probably not what you're looking for"
'Hope that helps .. PSM