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arXiv · 2412.16173

Weak ferrimagnets of the YFe1-xCrxO3 type: negative magnetization and spin reorientation

E. V. Vasinovich·A. S. Moskvin
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Abstract

In this work, we present an analysis of magnetic properties of weak ferrimagnets of the YFe$_{1-x}$Cr$_x$O$_3$ type. Taking into account the main spin interactions - isotropic Heisenberg superexchange, antisymmetric Dzyaloshinskii-Moriya exchange, single-ion spin anisotropy - calculations of the free energy, concentration and temperature dependences of magnetization were carried out within a framework of a molecular field model. In particular, the model demonstrates the phenomena of temperature compensation and negative magnetization, as well as spin reorientation. The compensation temperature reaches room temperature T = 300 K in a composition with x = 0.45. The existence of magnetic structures of the $G_{xyz}$ type with the spatial orientation of the Neel vector is predicted.

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E. V. Vasinovich, A. S. Moskvin. 2024-12-07. Weak ferrimagnets of the YFe1-xCrxO3 type: negative magnetization and spin reorientation. https://doi.org/10.61011/pss.2024.06.58699.17hh

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