high temperature magnets

hi,

pls let me know the magnets which withstands high temp of about 200°C without changing their magnetic characteristics..

As suggested in one of your previous threads, you'll want to refer to manufacturer data. In a few words, AlNiCo magnets are well suited, others (ferrite and rare earth) mostly aren't.
http://www.magnetfabrik.de/magnetfab...kstoff_web.pdf

Ultra-High Temperature Samarium Cobalt Magnets and Magnet Assemblies
http://www.electronenergy.com/produc...cobalt-uht.htm


See video:
http://www.supermagnetman.net/index.php?cPath=50