Ismaeal K. Jasem, Abdul-Samee Fawzi Abdul-Aziz and Nibras Malallah Ibrahim 2019. 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 Journal of Pure Science. 23, 10 (Jan. 2019), 81–87. DOI:https://doi.org/10.25130/tjps.v23i10.568.