Ferrites　are　materials　of　interest　due　to　their　broad　applications　in　high　technological　devices　and　a　lot　of　research　has　been　focused　to　synthesize　new　ferrites.　In　this　regard,　an　effort　has　been　devoted　to　synthesize　spinel　Pr–Ni　co-substituted　strontium　ferrites　with　a　nominal　formula　of　Sr1-xPrxFe2-yNiyO4　(0.0　≤　x　≤　0.1,　0.0　≤　y　≤　1.0).　The　cubic　structure　of　pure　and　Pr–Ni　co-substituted　strontium　ferrite　samples　calcinated　at　1073　K　for　3　h　has　been　confirmed　through　X-ray　diffraction　(XRD).　Average　sizes　of　crystallites　(18–25　nm)　have　been　estimated　from　XRD　analysis　and　nanometer　particle　sizes　of　synthesized　ferrites　have　been　further　verified　by　scanning　electron　microscopy　(SEM).　SEM　results　have　also　shown　that　particles　are　mostly　agglomerated　and　all　the　samples　possess　porosity.　It　has　been　observed　that　at　298　K,　the　values　of　resistivity　(ρ)　increase,　while　that　of　AC　conductivity,　dielectric　loss,　and　dielectric　constants　decrease　with　increasing　amounts　of　Pr3+　and　Ni2+　ions.　The　values　of　dielectric　parameters　initially　decrease　with　frequency　and　later　become　constant　and　can　be　explained　on　the　basis　of　dielectric　polarization.　Electrochemical　impedance　spectroscopy　(EIS)　studies　show　that　the　charge　transport　phenomenon　in　ferrite　materials　is　mainly　controlled　via　grain　boundaries.　Overall,　synthesized　ferrite　materials　own　enhanced　resistivity　values　in　the　range　of　1.38　×　109–1.94　×　109　Ω　cm　and　minimum　dielectric　losses,　which　makes　them　suitable　candidates　for　high　frequency　devices　applications.　©　2020　Elsevier　Ltd　and　Techna　Group　S.r.l.