Specific absorption rate in Zn-doted ferrites for self-controlled magnetic hyperthermia Angl Apostolov, Iliana Apostolova and Julia Wesselinowa Eur. Phys. J. B, 92 3 (2019) 58 Published online: 11 March 2019 DOI: 10.1140/epjb/e2019-90567-2