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Abstract <p>In polycrystalline La<sub>0.95</sub>Ca<sub>0.05</sub>Mn<sub>0.98</sub>Fe<sub>0.02</sub>O<sub>3</sub> manganite, high pressure leads to mesoscopic phase separation of the sample with the initial Jahn–Teller distortion of MnO<sub>6</sub> octahedra and the emergence of regions with undistorted octahedra above 4 GPa, with a complete rearrangement of the structure above ~12&#xa0;GPa. Raman scattering and X-ray diffraction data indicate significant heterogeneity of lightly doped samples.</p>

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Pressure Induced Phase Separation in Lightly Doped La0.95Ca0.05Mn0.98Fe0.02O3 Manganite

  • 期刊论文

  • 发表日期：

    2026年2月1日

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  • S. V. Zaitsev,
  • V. D. Sedykh,
  • A. V. Kuzmin,
  • K. P. Meletov

摘要

Abstract

In polycrystalline La0.95Ca0.05Mn0.98Fe0.02O3 manganite, high pressure leads to mesoscopic phase separation of the sample with the initial Jahn–Teller distortion of MnO6 octahedra and the emergence of regions with undistorted octahedra above 4 GPa, with a complete rearrangement of the structure above ~12 GPa. Raman scattering and X-ray diffraction data indicate significant heterogeneity of lightly doped samples.