Geok Bee TehSaravanan NagalingamDavid A. Jefferson2024-12-232024-12-232007-0110.1016/j.matchemphys.2006.03.008https://dspace-cris.utar.edu.my/handle/123456789/7549Preparation and studies of Co(II) and Co(III)-substituted barium ferrite prepared by sol–gel methodjournal-article