Effect of nickel doping in cobalt titanate on structural and magnetic properties for microwave-absorbing application. - Yunasfi; Fhadilla, Annisa Intan; Ramlan; Mashadi; Mulyawan, Ade; Winatapura, Didin S; Setiawan, Jan; Adi, Wisnu Ari; Izaak, MP; Gunanto, YE (Bulletin of Materials Science, 2025)