Heat generation ability of nanosized Mg1-XCuXFe2O4 ferrite in an AC magnetic field

Abstract

Mg0.4Cu0.6Fe2O4 ferrite with the highest heat generation ability in AC magnetic field for the Mg1-XCuXFe2O4 (X=0-1.0) series was prepared by the solid reaction method, and then bead milled to examine the effect of particle size on the heat generation ability. Nanosized Mg0.4Cu0.6Fe2O4 was obtained by bead milling using 0.3 mm and 0.1 mm diameter ZrO2 beads. The heat generation ability increased with decreasing particle diameter to ca. 16.1 nm. However, the heat generation ability decreased with decreasing particle diameter below 14.6 nm.