Effect of rare earth ions (RE = La3+, Sm3+, Nd3+, and Gd3+) substitution on structural, magnetic properties, and dc electrical resistivity of Co0.5Ni0.5Fe2O4 ferrite

La 3+ , Sm 3+ , Nd 3+ , and Gd 3+ substituted Co–Ni system (Co 0.5 Ni 0.5 Fe 2– x RE x O 4 ; where RE 3+  = La 3+ , Sm 3+ , Nd 3+ , and Gd 3+ ; x  = 0.0 and 0.06) ferrite materials have been synthesized using the solid-state reaction method. XRD, SEM, FTIR, DC electrical resistivity and VSM studies...

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