Effect of dc field on ac-loss peak in a commercial Bi:2223/Ag tape Ali Öztürk, İbrahim Düzgün and Selahattin Çelebi Eur. Phys. J. Appl. Phys., 80 3 (2017) 30601 Published online: 01 December 2017 DOI: 10.1051/epjap/2017170266