Modulated and enhanced magnetoelectric coupling in multiferroic [see pdf] Shijun Luo, Yusheng Wang, Lei Xu, Kai Xu and Kefeng Wang Eur. Phys. J. Plus, 135 4 (2020) 346 Published online: 02 April 2020 DOI: 10.1140/epjp/s13360-020-00327-6