Room temperature magnetoelectric coupling enhancement in Mg-substituted polycrystalline GdFeO3

The magnetic, dielectric and magnetoelectric coupling coefficients of GdFe1-xMgxO3 (x = 0.00, 0.02, 0.04 and 0.06) have been measured at room temperature. An increase in lattice constants and cell volume was observed by X-ray diffraction. The Néel temperature of GdFeO3 was reduced to 356 °C from 401 °C by Mg substitution. The dielectric constant increased from 0.011 to 123.70 with Mg substitution. The magnetoelectric coupling coefficient, α, observed for GdFeO3 was 0.76 mV cm−1 Oe−1 and increased to 1.67 mV/cm-Oe with x = 0.06 Mg substitution at room temperature.