Microscopic description of magnetic nonequilibrium phenomena in erbium orthoferrite

Article Materials Science, Multidisciplinary

Crystal field and origin of exchange bias in compensated rare-earth ferrimagnets

E. E. Zubov

Summary: The mechanism of exchange bias and spin reversal near the compensation point was studied using quantum-mechanical mean field theory. The impact of the crystal field on compensated ferrimagnets was considered, and specific single crystals of GdCrO3 and ErFeO3 were investigated. It was found that an applied magnetic field induces a weak canting of the transition metal magnetic moments near Tcomp, resulting in unidirectional anisotropy.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2022)

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Article Materials Science, Multidisciplinary

Temperature-driven spin switching and exchange bias in the ErFeO3 ferrimagnet

I. Fita et al.

Summary: The compensated ferrimagnet orthoferrite ErFeO3 exhibits temperature-driven spin switching and exchange bias, which is manifested as the temperature shift of the hysteresis loops upon cooling and heating. The unidirectional exchange bias anisotropy is caused by the shift in the region of coexistence of negative and positive magnetization, determined by the applied magnetic field. This phenomenon is discussed within a model that explains the magnetic compensation mechanism in ErFeO3.

PHYSICAL REVIEW B (2022)

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Article Chemistry, Physical

Magnetization reversal on different time-scales for ErFeO3 and NdFeO3 single crystals

Mohanad H. Mohammed et al.

Summary: The dynamics of magnetic moment reversal differs between ErFeO3 and NdFeO3, with the former exhibiting abrupt reversal and the latter gradual reversal. The process of magnetization reversal is temperature-dependent and influenced by the Zeeman splitting energy of rare earth ions and thermal energy.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2021)

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Article Multidisciplinary Sciences