Effects of Bi³⁺ Doping Amounts on the Magnetic Properties of FeSmO₃ Nanopowders

Abstract:

The samples of FeSmO₃ nanopowders were synthesized from the main raw materials of FeCl₃ and SmCl₃ by coprecipitation process. The samples were prepared by different precipitating agents including Na₂CO₃,NaOH and triethylamine (C₆H₁₅N). When the precipitating agent was NaOH, almost all of the Sm³⁺ and Fe³⁺ were precipitated. In this series of experiments, the molar ratios of Sm³⁺ to Fe³⁺ were 0.95:1, 1:1, 1.05:1, 1.1:1, 1.15:1 and 1.2:1. And when the molar ratio was 1.2:1, there was the least impurities in the obtained samples. The samples were sintered in the oven at different temperatures including 600°C,700°C, 800°C and 900°C. And only at 900°C, were the FeSmO₃ nanopowders made without impurities. The Sm³⁺ in FeSmO₃ was substituted by the Bi³⁺ in different doping amounts, which urged the preparation of BixFeSm_(1-x)O₃ nanopowders. And these nanopowders were characterized by XRD, VSM, SEM and fluorescent property technologies. The results showed that the obtained nanopowders were in high purity when x was 5% and it had the highest remanent polarization when x was 15%.

• Periodical: Applied Mechanics and Materials (Volume 680)
• Pages: 61-65
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.680.61
• Online since: October 2014
• Authors: Xuan Wen Liu*, He Liu, Yu Zhang, Xi Wei Qi
• Keywords: Bi³⁺ Doping, FeSmO₃, Magnetic Property, Nanopowder

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