Properties of Magnetic Materials

Hello!
I'm looking for some parameters of magnetic materials, which are used
for magnetic nanoparticles (like gamma Fe_2O_3, CrO_2, etc.). Mostly I
need
saturated magnetization values (in A/m) and damping parameter (for
Landau-Lifshitz-Gilbert equation).
Could you send me some of them or advice me some available articles
or databases of such magnetic materials' properties?
Thank you.

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