Room-temperature multiferroic properties in NiBi2O4 Kai Chen, Feng Gao, Weiwei Lin, Hongling Cai, Guolin Li, Xingwei Dong, Song Peng, Xiaoshan Wu, Mao Yang, Jun Du et al. (3 more) EPL, 89 2 (2010) 27004 Published online: 01 February 2010 DOI: 10.1209/0295-5075/89/27004