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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 549Effect of Fe Content on the Structure and...

Effect of Fe Content on the Structure and Properties of Sr-Fe-Co Oxides

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Abstract:

SrFe_xCo_0.5O_3-δ (x=0.5, 0.75, 1.0, 1.25) powders have been synthesized by the solid state reaction process. The effect of Fe content on the microstructure and properties of the SrFe_xCo_0.5O_3-δ powders were investigated in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermo-gravimetric analysis and differential scanning calorimeters (TGA/DSC). XRD results reveal that the phases of the SrFe_xCo_0.5O_δ powders are dependent on the content of Fe. X-ray diffraction. SEM images show that the obtained powders have similar morphology with particle structure and uniform size distribution. The phase transition from ordered brownmillerite structure to disorder perovskite structure is strongly dependent on the content of Fe by the TGA/DSC analysis of the SrFe_xCo_0.5O_3-δ powders. Phase transition temperature increases from 770°C to 800°C with the x value in the SrFe_xCo_0.5O_3-δ increasing to 1.0. But the phase of the SrFe_1.25Co_0.5O_3-δ powder maintains unchanged behaving good phase stability and chemistry stability.

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Chemical Engineering and Material Properties II

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Periodical:

Advanced Materials Research (Volume 549)

Pages:

141-146

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.549.141

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Online since:

July 2012

Authors:

Xiang Hong Huang, Jun Qiao, Qian-Feng Zhang

Keywords:

Fe Content, Property, Sr-Fe-Co Oxides, Structure, X-Ray Diffraction (XRD)

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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