Common exchange-biased spin switching mechanism in orthoferrites

I. Fita; A. Wisniewski; R. Puzniak; E. E. Zubov; V. Markovich; G. Gorodetsky

doi:10.1103/PhysRevB.98.094421

Common exchange-biased spin switching mechanism in orthoferrites

I. Fita, A. Wisniewski, R. Puzniak, E. E. Zubov, V. Markovich, G. Gorodetsky

Department of Physics

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

The unconventional exchange-bias (EB) effect in single crystals of RFeO3(R=Nd,Sm) compensated ferrimagnets (fMs), composed of two antiferromagnetically (AFM) coupled R and Fe sublattices with opposite ferromagnetic (FM) moments, exhibiting the FM moment reversal via a fast spin switching is reported. In NdFeO3, the EB anisotropy field emerges and diverges upon approaching the compensation temperature TcompNd=9.2K, and changes sign with crossing TcompNd, in similarity to the behavior observed recently in ErFeO3. In contrast, SmFeO3 exhibits a substantial EB, not only at its TcompSm=4.8K, but also at higher temperatures up to 100 K, and the EB changes its sign with increasing cooling field. It is shown that in all known RFeO3 (R=Nd,Sm,Er) compensated fMs the field-induced FM moment reversal is similarly exchange biased near Tcomp.

Original language	English
Article number	094421
Journal	Physical Review B
Volume	98
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.98.094421
State	Published - 21 Sep 2018

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.98.094421

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title = "Common exchange-biased spin switching mechanism in orthoferrites",

abstract = "The unconventional exchange-bias (EB) effect in single crystals of RFeO3(R=Nd,Sm) compensated ferrimagnets (fMs), composed of two antiferromagnetically (AFM) coupled R and Fe sublattices with opposite ferromagnetic (FM) moments, exhibiting the FM moment reversal via a fast spin switching is reported. In NdFeO3, the EB anisotropy field emerges and diverges upon approaching the compensation temperature TcompNd=9.2K, and changes sign with crossing TcompNd, in similarity to the behavior observed recently in ErFeO3. In contrast, SmFeO3 exhibits a substantial EB, not only at its TcompSm=4.8K, but also at higher temperatures up to 100 K, and the EB changes its sign with increasing cooling field. It is shown that in all known RFeO3 (R=Nd,Sm,Er) compensated fMs the field-induced FM moment reversal is similarly exchange biased near Tcomp.",

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AU - Fita, I.

AU - Wisniewski, A.

AU - Puzniak, R.

AU - Zubov, E. E.

AU - Markovich, V.

AU - Gorodetsky, G.

PY - 2018/9/21

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N2 - The unconventional exchange-bias (EB) effect in single crystals of RFeO3(R=Nd,Sm) compensated ferrimagnets (fMs), composed of two antiferromagnetically (AFM) coupled R and Fe sublattices with opposite ferromagnetic (FM) moments, exhibiting the FM moment reversal via a fast spin switching is reported. In NdFeO3, the EB anisotropy field emerges and diverges upon approaching the compensation temperature TcompNd=9.2K, and changes sign with crossing TcompNd, in similarity to the behavior observed recently in ErFeO3. In contrast, SmFeO3 exhibits a substantial EB, not only at its TcompSm=4.8K, but also at higher temperatures up to 100 K, and the EB changes its sign with increasing cooling field. It is shown that in all known RFeO3 (R=Nd,Sm,Er) compensated fMs the field-induced FM moment reversal is similarly exchange biased near Tcomp.

AB - The unconventional exchange-bias (EB) effect in single crystals of RFeO3(R=Nd,Sm) compensated ferrimagnets (fMs), composed of two antiferromagnetically (AFM) coupled R and Fe sublattices with opposite ferromagnetic (FM) moments, exhibiting the FM moment reversal via a fast spin switching is reported. In NdFeO3, the EB anisotropy field emerges and diverges upon approaching the compensation temperature TcompNd=9.2K, and changes sign with crossing TcompNd, in similarity to the behavior observed recently in ErFeO3. In contrast, SmFeO3 exhibits a substantial EB, not only at its TcompSm=4.8K, but also at higher temperatures up to 100 K, and the EB changes its sign with increasing cooling field. It is shown that in all known RFeO3 (R=Nd,Sm,Er) compensated fMs the field-induced FM moment reversal is similarly exchange biased near Tcomp.

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Common exchange-biased spin switching mechanism in orthoferrites

Abstract

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