Data on CoPtCrB

[Repetit]

Hey!
Im doing a project at university about storages medias. I come across a matter called CoPtCrB used as the magnetic media in for instance harddrives. I have not been able to find any information like density and such though, and I need those data. Can someone in here direct me to some facts about this matter or do someone know something about this matter???

Thanks in advance,

René Petersen

[Doc Al]

I don't know anything about these materials, but a quick Google gave me this:
http://www-306.ibm.com/chips/periodic/pt-cr-b.html