International audienceIntrinsic ferromagnetism in high quality wurtzite Ga0:937Mn0:063N semiconductor is unambigu- ously demonstrated by both macroscopic magnetization measurements and x-ray magnetic circular dichroism. The structural quality of the samples grown by plasma-assisted molecular beam epitaxy is confirmed by x-ray di®raction and x-ray linear dichroism. The Curie temperature of a (Ga,Mn)N sample with 6.3 % Mn is 8 K with a spontaneous magnetic moment of 2.4 Bohr magneton per Mn at 2 K