“Fabrication and study of the structural and spectral properties of the composites (y) Mn0.6 Zn0.4 Fe2O4 + (1-y) PZT prepared by the powder technology method”, Tikrit J. Pure Sci., vol. 23, no. 10, pp. 81–87, Jan. 2019, doi: 10.25130/tjps.v23i10.568.