Vacancy-tuned paramagnetic/ferromagnetic martensitic transformation in Mn-poor Mn1-xCoGe alloys E. K. Liu, W. Zhu, L. Feng, J. L. Chen, W. H. Wang, G. H. Wu, H. Y. Liu, F. B. Meng, H. Z. Luo and Y. X. Li EPL, 91 1 (2010) 17003 Published online: 20 July 2010 DOI: 10.1209/0295-5075/91/17003