  X-ray emission and absorption spectroscopies are jointly used as fast probes
to determine the evolution as a function of doping of the fluctuating local
magnetic moments in K- and Cr- hole-doped BaFe2As2. An increase in the local
moment with hole-doping is found, supporting the theoretical scenario in which
a Mott insulating state that would be realized for half-filled conduction bands
has an influence throughout the phase diagram of these iron-pnictides.
