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<p>This study provides a comprehensive investigation of the critical behavior of the La<sub>0.67</sub>Ba<sub>0.33</sub>Mn<sub>0.85</sub>Fe<sub>0.15</sub>O<sub>3</sub> compound, synthesized via the sol-gel method. Analyzing the temperature and magnetic field dependence of magnetization, we confirm that the material undergoes a distinct second-order magnetic phase transition near the Curie temperature, determined to be T<sub>C</sub> = 170K. Notably, the refined critical exponents β, γ, and δ, calculated using modified Arrott plots, the critical isotherm, and Kouvel–Fisher analysis, were found to be β=0.349±0.002, γ=1.350±0.033 and δ=4.868±0.002, were obtained using modified Arrott plots, the critical isotherm, and Kouvel–Fisher analysis. These values closely align with the predictions of the long-range mean-field model. Their accuracy was further validated through the universal scaling hypothesis.</p>

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Critical behavior and magnetic phase transition in La0·67Ba0·33Mn0·85Fe0·15O3 nanoparticles

  • 期刊论文

  • 发表日期：

    2026年7月6日

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  • A Ben Jazia Kharrat,
  • W Boujelben

摘要

This study provides a comprehensive investigation of the critical behavior of the La0.67Ba0.33Mn0.85Fe0.15O3 compound, synthesized via the sol-gel method. Analyzing the temperature and magnetic field dependence of magnetization, we confirm that the material undergoes a distinct second-order magnetic phase transition near the Curie temperature, determined to be TC = 170K. Notably, the refined critical exponents β, γ, and δ, calculated using modified Arrott plots, the critical isotherm, and Kouvel–Fisher analysis, were found to be β=0.349±0.002, γ=1.350±0.033 and δ=4.868±0.002, were obtained using modified Arrott plots, the critical isotherm, and Kouvel–Fisher analysis. These values closely align with the predictions of the long-range mean-field model. Their accuracy was further validated through the universal scaling hypothesis.