Synthesis and characterization of Cobalt-doped nano-structure barium strontiumtitanate prepared by Sol–gel process

摘要

Multiferroic materials possess at least two ferroic properties which make them particularly suitable for multifunctional device applications [Chunqing Wang et al.,(2012). The purpose of this work was to get onedimensional multiferroics by doping of Co2+ into ferroelectrics. Multiferroic Ba0.9Sr0.1 Ti0.90Co0.1O3 nanoparticle was prepared via a sol–gel method. The magnetic hysteresis loop confirmed the expected enhancing of ferromagnetic properties with a saturation magnetization of 127.58 memu/g, a retentivity of 19.656 memu/g, and a coercivity of 93.951 Oe measured at room temperature. Structural study revealed the tetragonal BST phase by using XRD. The crystallite sizes obtained were 52 and 31 nm for Ba0.9 Sr0.1 Ti O3 and Ba0.9Sr0.1 Ti0.90Co0.1O3, respectively. The TEM was used to confirm the presence of the nano-structure phase giving 50 and 30 nm, respectively which is agree with that calculated data from XRD.