  The magnetoresistance in a series of Ga1-xMnxAs samples with 0.2 =< x =< 0.8
have been measured for three mutually orthogonal orientations of the external
magnetic field. The anisotropy magnetoresistance decreases with increasing of
the Mn content, which means that the magnetic disorder or defects scattering
increases with increasing of Mn content. And also the magneto-crystalline
anisotropy increases with increasing of Mn concentration.
