Spontaneous Rotation of Ferrimagnetism Driven by Antiferromagnetic Spin Canting

Abstract

Spin-reorientation phase transitions that involve the rotation of a crystal${}^{\prime }$s magnetization have been well characterized in distorted-perovskite oxides such as the orthoferrites. In these systems spin reorientation occurs due to competing rare-earth and transition metal anisotropies coupled via $f$-$d$ exchange. Here, we demonstrate an alternative paradigm for spin reorientation in distorted perovskites. We show that the $R_2\mathrm{CuMnM}{\mathrm{n}}_4{\mathrm{O}}_{12}$ (R = Y or Dy) triple A-site columnar-ordered quadruple perovskites have three ordered magnetic phases and up to two spin-reorientation phase transitions. Unlike the spin-reorientation phenomena in other distorted perovskites, these transitions are independent of rare-earth magnetism, but are instead driven by an instability towards antiferromagnetic spin canting likely originating in frustrated Heisenberg exchange interactions, and the competition between Dzyaloshinskii-Moriya and single-ion anisotropies.

arXiv comment5 pages, 3 figures

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Cited by in corpus (4)

• Magnetic phase diagram of rare-earth orthorhombic perovskite oxides
• Origin of the Type-II Weyl state in topological antiferromagnetic YbMnBi2
• Unusual effects of magnetic dilution in the ferrimagnetic columnar ordered $\mathrm{S}{\mathrm{m}}_2\mathrm{MnMnM}{\mathrm{n}}_{4-\mathrm{x}}\mathrm{T}{\mathrm{i}}_{\mathrm{x}}{\mathrm{O}}_{12}$ perovskites
• Magnetic inhomogeneities in the quadruple perovskite manganite [Y${}_{2-x}$Mn${}_x$]MnMnMn${}_4$O${}_{12}$