Structural, dielectric, magnetic, and nuclear magnetic resonance studies of multiferroic Y-type hexaferritesKhanduri, Himani; Chandra Dimri, Mukesh; Kooskora, Helgi; Heinmaa, Ivo; Viola, G.; Ning, H.; Reece, M.J.; Krustok, Jüri; Stern, RaivoJournal of applied physics2012 / p. 073903-1 - 073903-7 : ill