Preparation and characterization of (1 – y)BiFeO3/y(Ba0.7Na0.3Ti0.7Nb0.3)O3 multiferroic ceramicsAhmed Jarboui, Fathi Bahri and Hamadi KhemakhemEur. Phys. J. Appl. Phys., 62 1 (2013) 10303DOI: https://doi.org/10.1051/epjap/2013120237