Abstract
(1 − x)Bi0.5Na0.5TiO3 + xSrCoO3 − δ solid-solution system was synthesised through the simple sol–gel technique. X-ray diffraction and Raman scattering analyses were used to study the structure of (1 − x)Bi0.5Na0.5TiO3 + xSrCoO3 − δ system. Results showed that the SrCoO3 − δ materials dissolved well into the host Bi0.5Na0.5TiO3 crystal. The random incorporation of Sr and Co cations into the host Bi0.5Na0.5TiO3 crystal to form a solid solution resulted in reduced optical band-gap energy and induced the complex magnetic properties of host Bi0.5Na0.5TiO3 materials. The optical band-gap energy of pure Bi0.5Na0.5TiO3 materials was estimated to be approximately 3.09 eV, which decreased to 2.18 eV for 9 mol% SrCoO3 − δ solute incorporated into Bi0.5Na0.5TiO3 materials. The magnetic properties of Bi0.5Na0.5TiO3 materials were tuned as a function of SrCoO3 − δ concentration added into the host Bi0.5Na0.5TiO3 materials. The enhanced magnetic performance in SrCoO3 − δ-modified Bi0.5Na0.5TiO3 materials can be possibly applied in multifunction materials for electronic devices.
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