What is the time scale of oxidation of a ferromagnetic metal film surface (iron, permalloy, cobalt...) in vacuum?

Dears,  The case is when I deposit a Co, Fe or permalloy film (say at about 10^-10 mbar) and then wait into the chamber for the following process or move in-situ in a vacuum about 10^-8 mbar in...

05 January 2015 7,741 7 View