Stepped heating procedure for experimental SAR evaluation of ferrofluids N. Iacob, G. Schinteie, P. Palade, C. M. Ticos and V. Kuncser Eur. Phys. J. E, 38 6 (2015) 57 Published online: 23 June 2015 DOI: 10.1140/epje/i2015-15057-8