AC and DC properties of M-type SrCoxTixFe(12−2x)O19 hexagonal ferrite Randeep Kaur, Charanjeet Singh, Harpreet Kaur, Tanvi Dhiman and S. Bindra Narang Eur. Phys. J. B, 88 10 (2015) 272 Published online: 21 October 2015 DOI: 10.1140/epjb/e2015-60492-7