Interface-driven magnetoelectric effects in granular CrO2 A. Bajpai, P. Borisov, S. Gorantla, R. Klingeler, J. Thomas, T. Gemming, W. Kleemann and B. Büchner EPL, 91 1 (2010) 17006 Published online: 29 July 2010 DOI: 10.1209/0295-5075/91/17006