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<p>The A<sub>2</sub>FeCrO<sub>6</sub> (A = La &amp; Sm) double perovskites were synthesized using conventional solid-state reaction method. This work provides non paramagnetic behaviour of La<sub>2</sub>FeCrO<sub>6</sub> at room temperature and the first report on the synthesis and characterization of the Sm<sub>2</sub>FeCrO<sub>6</sub> double perovskite. From Rietveld refinement of the powder X-ray diffraction, the crystal structure of the double perovskite was confirmed to be monoclinic (P2<sub>1</sub>/n), with an average crystallite size of 55&#xa0;nm and 72&#xa0;nm. XRD results were further supported by Raman spectroscopic modes. The zero field cooled (ZFC) and field cooled (FC) curves diverged below 250&#xa0;K temperature for Sm based sample and near the room temperature for La based sample. The La-based sample exhibited ferromagnetic behavior with anti-ferromagnetic component at 5&#xa0;K and 300&#xa0;K, while the Sm-based sample showed paramagnetism at 300&#xa0;K and antiferromagnetism at 5&#xa0;K.</p>

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Microstructural characterization and magnetic properties of A2FeCrO6 (A = La and Sm) double perovskites

  • 期刊论文

  • 发表日期：

    2025年10月8日

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  • Surendra Kumar Sajan,
  • Samrat Mukherjee

摘要

The A2FeCrO6 (A = La & Sm) double perovskites were synthesized using conventional solid-state reaction method. This work provides non paramagnetic behaviour of La2FeCrO6 at room temperature and the first report on the synthesis and characterization of the Sm2FeCrO6 double perovskite. From Rietveld refinement of the powder X-ray diffraction, the crystal structure of the double perovskite was confirmed to be monoclinic (P21/n), with an average crystallite size of 55 nm and 72 nm. XRD results were further supported by Raman spectroscopic modes. The zero field cooled (ZFC) and field cooled (FC) curves diverged below 250 K temperature for Sm based sample and near the room temperature for La based sample. The La-based sample exhibited ferromagnetic behavior with anti-ferromagnetic component at 5 K and 300 K, while the Sm-based sample showed paramagnetism at 300 K and antiferromagnetism at 5 K.