Structure and magnetic property of (Ga,Cr)As films with different Cr contents J. Lu, H. J. Meng, K. Zhu, L. Chen, P. F. Xu, Z. Xie and J. H. Zhao EPL, 89 6 (2010) 67003 Published online: 13 April 2010 DOI: 10.1209/0295-5075/89/67003