On Tue, Sep 4, 2012 at 9:11 PM, Jouni Valkonen <jounivalko...@gmail.com> wrote: > Terry, do you know how much it has influence to the speed of misalignment of > dipole structure, if neodymium magnets are cooled into -192°C using liquid > nitrogen?
Yes, I certainly do. I was a part of a group who made a very large spiral shaped NdFeB magnet to the tune of $100,000. It's the flash cooling which prevents changing of the alignment of the domains: http://www.ndfeb-info.com/neodymium_magnets_made.aspx T
