Preparation of NiFe2O4 nanopowder via EDTA precursor and study of its properties

► NiFe2O4 nanopowder was prepared by EDTA precursor method. ► Change of microstructure with increasing sintering temperature was studied. ► Effect of microstructure on DC resistivity was correlated. ► Room temperature magnetic property of NiFe2O4 nanopowder was determined.