We have studied single-crystalline CeCu2(Si1-xGex)2 using neutron diffraction to determine the antiferromagnetic order in the regime with low Ge content, x \le 0.5. The system orders in an incommensurate magnetic structure with a propagation vector close to \tau = (0.25 0.25 0.5). Up to two additional phase transitions were observed below the Néel temperature characterized by a spin reorientation and a lock-in to a probably commensurate structure.
PACS numbers: 75.30.Mb, 71.27.+a, 71.10.Hf, 75.20.Hr
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