دراسة الخصائص التركيبية و الكهربائية للمتراكب {x(BaAlyfE12-y O19)‎(1-X)‎Ni0.5Zn0.5Fe2O4} المحضرة بطريقة السول-جل

الملخص EN

Nanocompound of BaAl_y Fe_(12-y) O_19, Ni_0.5 Zn_0.5 Fe_2 O_4 and nanocomposite [x(BaAl_y Fe_(12-y) O_19 )+(1-x) Ni_0.5 Zn_0.5 Fe_2 O_4 ] were prepared by Sol-gel method with a ratio x= 10, 25, 50, 75% .

The samples compressed as a tablet under 7 ton⁄cm^2 hydraulic pressure, and these tablets were sintered at a temperature of 900 ℃ for a period of two hours (2h).

The X-ray diffraction revealed the hexagonal structure of BaAl_y Fe_(12-y) O_19 with lattice parameters c=23.109 Å and a=5.879 Å, while Ni_0.5 Zn_0.5 Fe_2 O_4 reveals the cubic structure with a lattice parameter a=8.358 Å.

The grain size of the samples has been calculated by SEM and it was between (25-35) nm.

Electrical properties showed a decrease in the dielectric constant values, loss coefficient from (282.4348), (73.0997) to (4.2752), (0.4322) respectively, and increasing the electrical conductivity value from (2.2023*10-7 Ω-1 cm-1) to (9.1754*10-1 Ω-1 cm-1) with increasing the frequency.