Hi George, > Is it possible that you are confusing antiferromagnetic, which > is a ferromagnetic material where the electron spins in alternating > layers of atoms are in opposite directions with magnetic shielding > such as is provided by superconductors.
Yes. My terminology is confusing and non-standard. What I am referring to is antiferromagnetic spin reorientation and the exchange-bias effect where a (virtual ?) antiferromagnetic layer (which can be superconducting or not but is not ferromagnetic, so I guess it would be called "virtual") can either expel the flux of a nearby ferromagnet or else, on paramagnetic transition, partially align with it. A true antiferromagnetic effect would be more robust, of course, but is it even possible, and if so how easily switched? BTW... care to share or report on any of your recent efforts at this flux gate approach to OU ? Jones
