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Abstract <p>The competition of nearest-neighbor exchange interactions is considered within a four-sublattice model to determine the magnetic structure of the model crystal. It is shown that three types of magnetic structures exist: antiferromagnetic, canted, and quasi-one-dimensional. An analytical dependence of the magnetic structure on the ratio of the ferromagnetic and antiferromagnetic exchange parameters is obtained. Possible orbital-charge Mn<sup>3+</sup>/Mn<sup>4+</sup> ordering that could cause this frustrated square magnetic structure is considered.</p>

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Frustrated Antiferromagnet with Square Lattice: Magnetic Structure and Application for Manganite Crystals

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • L. E. Gonchar

摘要

Abstract

The competition of nearest-neighbor exchange interactions is considered within a four-sublattice model to determine the magnetic structure of the model crystal. It is shown that three types of magnetic structures exist: antiferromagnetic, canted, and quasi-one-dimensional. An analytical dependence of the magnetic structure on the ratio of the ferromagnetic and antiferromagnetic exchange parameters is obtained. Possible orbital-charge Mn3+/Mn4+ ordering that could cause this frustrated square magnetic structure is considered.