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<p>This work presents the synthesis and characterization of La<sub>2</sub>SrFe<sub>1.7</sub>Ni<sub>0.3</sub>TiO<sub>9</sub> triple perovskite oxide, prepared via the solid-state reaction method and subjected to sintering at two different temperatures, 1000&#xa0;°C and 1300&#xa0;°C. X-ray diffraction (XRD) analysis confirmed that the synthesized material adopts an orthorhombic structure belonging to the Pnma space group. Notably, the sample sintered at 1300&#xa0;°C exhibited an enlarged lattice constant compared to the sample sintered at 1000&#xa0;°C. Surface morphology studies further revealed an increase in grain size at higher sintering temperatures, corresponding to a decrease in dielectric constant. Specifically, the dielectric constant of the sample sintered at 1000&#xa0;°C was higher than that of the sample sintered at 1300&#xa0;°C. Magnetic property measurements indicated that parameters such as remanent magnetization (<i>M</i><sub>r</sub>), saturation magnetization (<i>M</i><sub>s</sub>), and coercivity (<i>H</i><sub>c</sub>) showed a temperature-dependent decrease as the sintering temperature was raised. The observed reduction in dielectric constant for samples sintered at elevated temperatures is advantageous for minimizing heat dissipation and parasitic capacitance, making these materials suitable for applications in high-speed switching devices. This study underscores the potential of temperature-tuned perovskite materials in advanced electronic and magnetic applications.</p>

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Effect of sintering temperature on the structural, morphological, optical, magnetic, and dielectric properties of lead-free La2SrFe1.7Ni0.3TiO9 triple perovskite

  • 期刊论文

  • 发表日期：

    2025年1月24日

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  • Aaqib Rashid,
  • Mohd Ikram

摘要

This work presents the synthesis and characterization of La2SrFe1.7Ni0.3TiO9 triple perovskite oxide, prepared via the solid-state reaction method and subjected to sintering at two different temperatures, 1000 °C and 1300 °C. X-ray diffraction (XRD) analysis confirmed that the synthesized material adopts an orthorhombic structure belonging to the Pnma space group. Notably, the sample sintered at 1300 °C exhibited an enlarged lattice constant compared to the sample sintered at 1000 °C. Surface morphology studies further revealed an increase in grain size at higher sintering temperatures, corresponding to a decrease in dielectric constant. Specifically, the dielectric constant of the sample sintered at 1000 °C was higher than that of the sample sintered at 1300 °C. Magnetic property measurements indicated that parameters such as remanent magnetization (Mr), saturation magnetization (Ms), and coercivity (Hc) showed a temperature-dependent decrease as the sintering temperature was raised. The observed reduction in dielectric constant for samples sintered at elevated temperatures is advantageous for minimizing heat dissipation and parasitic capacitance, making these materials suitable for applications in high-speed switching devices. This study underscores the potential of temperature-tuned perovskite materials in advanced electronic and magnetic applications.