Electronic and magnetic properties of (Bi 0.5 Na 0.5 )(Mn 0.5 Nb 0.5 )O 3. - Bujakiewicz-Koronska, Renata; Nalecz, Dawid M.; Bałanda, Maria; Molak, Andrzej; Ujma, Zbigniew (Phase Transitions, 2014)