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Abstract <p>In this paper, the crystal structure of Pr(Sr<sub>0.2</sub>Ca<sub>0.8</sub>)<sub>2</sub>Mn<sub>2</sub>O<sub>7</sub> double-layered manganite and the effect of low temperatures have been studied by X-ray diffraction method. It is found that this compound crystallizes into <i>Cmc</i>2<sub>1</sub> non-centrosymmetric spatial group. The crystal structure at room temperature is compared with that at low temperatures. Lowering the temperature not only leads to a change in the bond lengths, but also causes differences in the bond itself, namely, a change in angles.</p>

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Structural Features of Pr(Sr0.2Ca0.8)2Mn2O7 Double-Layer Manganite

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • A. N. Matveeva,
  • V. A. Orlova,
  • V. A. Matveev,
  • A. A. Bykov,
  • K. Yu. Terentyev

摘要

Abstract

In this paper, the crystal structure of Pr(Sr0.2Ca0.8)2Mn2O7 double-layered manganite and the effect of low temperatures have been studied by X-ray diffraction method. It is found that this compound crystallizes into Cmc21 non-centrosymmetric spatial group. The crystal structure at room temperature is compared with that at low temperatures. Lowering the temperature not only leads to a change in the bond lengths, but also causes differences in the bond itself, namely, a change in angles.