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The crystal structure of double-layered manganite Pr(Sr0.2Ca0.8)2Mn2O7 was determined. This compound crystallizes in the noncentrosymmetric space group Cmc21 at room temperature. A comparison with the crystal structure of pure PrCa2Mn2O7 was carried out. The structural differences arise from the chemical pressure caused by substitution of Ca with Sr, which leads to different Jahn–Teller distortions. In Pr(Sr0.2Ca0.8)2Mn2O7, the MnO6 octahedra are elongated, and Mn is displaced from the center of the octahedron.
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Matveeva et al. (2026) studied this question.
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