NiFe2-xDyxO4(x = 0, 0.1) compounds were prepared by solid state reaction. Room temperature X-ray diffraction confirmed the formation of the compounds in cubic inverse spinel phase with the space group Fd3m. Increments in the lattice constant were observed upon partial substitution of Fe3+by Dy3+. While both magnetization and cubic magnetocrystalline anisotropy (K1) decreased with increasing temperature, with Dy3+substitution, at any given temperature the magnetization decreased and K1increased. A quantitative observation of direct magnetoelectric (DME) effect and qualitative observation of converse magnetoelectric (CME) effect in NiFe1.9Dy0.1O4compound, describe its multiferroic nature.
Majumder, A., Ugendar, K., Anoop Baby, K. B., Chunchu, V., Mondal, R. A., & Markandeyulu, G. (2015). Anisotropy, Magnetostriction and Converse Magnetoelectric Effect in Dy Substituted Ni Ferrite. In Physics Procedia (Vol. 75, pp. 238–244). Elsevier B.V. https://doi.org/10.1016/j.phpro.2015.12.029