Effect of Poly Sodium-p-Styrenesulfonate on the Phase Formation and Morphology of the Hydrothermally Synthesized Bismuth Ferrite Powders

Abstract:

Rhombohedral bismuth ferrite (BiFeO₃) powders were hydrothermally synthesized by using C₆H₈BiNO₇ and Fe (NO₃)·5H₂O as precursors, KOH as a mineralizer and poly sodium-p-styrenesulfonate (PSS) as an additive. The phase formation and morphology of the as-prepared powders were characterized by X-ray diffraction,raman spectroscopy, and field-emission scanning electron microscopy. In order to investigate the effects of PSS, a series of experiments were performed by changing the introduced amount of PSS and the hydrothermal reaction time. The results showed that the introduction of the PSS leads to the synthesized bismuth ferrite changes from the mixture of Bi₂Fe₄O₉ and BiFeO₃ to pure rhombohedral BiFeO₃. Corresponding to the phase composition evolution, the particle morphology alters from nanosheets to microparticles. The magnetic properties of single-crystalline BiFeO₃ powders were also characterized. Based on the experimental results, the phase formation mechanism of the rhombohedral BiFeO₃ hydrothermally synthesized assisted with PSS was discussed.

• Periodical: Materials Science Forum (Volumes 745-746)
• Pages: 393-397
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.745-746.393
• Online since: February 2013
• Authors: Xin Yang, Gang Xu, Zhao Hui Ren, Gao Rong Han, Ge Shen
• Keywords: BiFeO₃, Hydrothermal Method, PSS, SEM, X-Ray Diffraction (XRD)

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