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- W2889735462 abstract "The unconventional exchange-bias (EB) effect in single crystals of $Rmathrm{Fe}{mathrm{O}}_{3}(R=mathrm{Nd},phantom{rule{0.28em}{0ex}}mathrm{Sm})$ 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 ${mathrm{NdFeO}}_{3}$, the EB anisotropy field emerges and diverges upon approaching the compensation temperature ${T}_{mathrm{comp}}^{mathrm{Nd}}=9.2phantom{rule{0.16em}{0ex}}mathrm{K}$, and changes sign with crossing ${T}_{mathrm{comp}}^{mathrm{Nd}}$, in similarity to the behavior observed recently in ${mathrm{ErFeO}}_{3}$. In contrast, ${mathrm{SmFeO}}_{3}$ exhibits a substantial EB, not only at its ${T}_{mathrm{comp}}^{mathrm{Sm}}=4.8phantom{rule{0.16em}{0ex}}mathrm{K}$, 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 $R{mathrm{FeO}}_{3}$ ($R=mathrm{Nd},phantom{rule{0.28em}{0ex}}mathrm{Sm},phantom{rule{0.28em}{0ex}}mathrm{Er}$) compensated fMs the field-induced FM moment reversal is similarly exchange biased near ${T}_{mathrm{comp}}$." @default.
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- W2889735462 date "2018-09-21" @default.
- W2889735462 modified "2023-09-29" @default.
- W2889735462 title "Common exchange-biased spin switching mechanism in orthoferrites" @default.
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- W2889735462 doi "https://doi.org/10.1103/physrevb.98.094421" @default.
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