TY - BOOK AU - Mohamed Afifi Ibrahim Mahmoud AU - Mohamed Ali Ahmed , AU - Salwa Fahim Mansour , TI - Improvement of the physical properties of multiferroic magnetoelectric nano composite / PY - 2012/// CY - Cairo : PB - Mohamed Afifi Ibrahim Mahmoud , KW - Magnetoelectric nanocomposite KW - Ni - nanoferrite KW - Structural properties N1 - Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Physics; Issued also as CD N2 - Nanometric nickel copper ferrites Ni₁₋ {u036F} CU {u036F} Fe₂O₄ , O{u2264}x {u2264}O.45 were prepared by the citrate precursor method . XRD measurements confirm the formation of single phase cubic spinel structure . The lattice parameter increases with increasing CU²⁺ ion substitution . The decrease in the ac conductivity was ascribed to the increase in hopping length ER -