I'm interested to know what is the difference between cobalt oxides
CoO and Co3O4.
After cobalt growing by means of sputtering, if the sample is at air,
which is the most  probable oxide formation?
And, If I perform an oxygen plasma treatment to the sample, in this
case, can other  oxide be formed?
Also I would be very happy if someone say me  dielectric permittivity
constants of this  oxides.
Thanks
Ana