Magnetic and dielectric properties of Aurivillius phase Bi4.2Nd0.8Ti3Fe0.5Co0.5O15 J. Yang, L. H. Yin, D. F. Shao, X. B. Zhu, J. M. Dai and Y. P. Sun EPL, 96 6 (2011) 67006 Published online: 07 December 2011 DOI: 10.1209/0295-5075/96/67006