Abstract :
Composites materials containing both of ferroelectric and ferromagnetic phase with the composition
(x)Ba0.7Sr0.3TiO3+(1-x)Ni0.7Zn0.3Fe2O4 (BST—barium Strontium Titanate), in which x varies as(x=90, 70,50%).where the powder of compound perpetrated using Sol-Gel auto combustion technique in molar ratio[1:1] ,The Powder Calcination at 900ºC and Press at (7ton/cm2). Then the samples were sintered at 1200°C for (2h). The structural and electrical characterizations of the investigated nanocomposite are discussed and reported. The formation of nanosized composite with two separate phases was confirmed by X-ray diffraction, scanning electron microscopy (SEM). XRD results show that the sample have two phase(tetragonal)for Ba0.7Sr0.3TiO3 and (cubic)for Ni0.7Zn0.3Fe2O4 and all prepared samples are in nanoscale size (18-35nm) and porosity decreases with increasing the overlay ratios to minimum value(24%) at ratio of composition (50%) . The variation of dielectric constant (ε’), dielectric loss factor (ε”) , the ac and dc conductivity of (x)Ba0.7Sr0.3TiO3+ (1-x)Ni0.7Zn0.3Fe2O4 was investigated as a function of frequency (50 Hz–1 MHz). This study enhances the use of this prepared system in memory applications.
Author Name : Bilal A.Omar, Sabah J.Fathi & Farouq I.Hussain
DOI: https://doi.org/10.5281/zenodo.816480
Keywords: Composites, ferroelectric, auto combustion, XRD, SEM, Structural Properties.
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