Static current models in Co2+ and Ti4+ substituted M-type CaCoxTixFe(12−2x)O19 ferrite Rajneesh Kaur, Charanjeet Singh, Vikas Bhikhan, Maciej Jaroszewski and S. Bindra Narang Eur. Phys. J. B, 88 10 (2015) 245 Published online: 05 October 2015 DOI: 10.1140/epjb/e2015-60526-2