Essential aspects of the spontaneous exchange bias effect

Bufaiçal, L.; Bittar, E.M.

doi:10.1016/j.jmmm.2024.172109

Journal of Magnetism and Magnetic Materials

2024

DOI: 10.1016/j.jmmm.2024.172109

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Essential aspects of the spontaneous exchange bias effect

L. Bufaiçal,

E.M. Bittar

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2024

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Cited by 4 publications

References 66 publications

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Revealing exchange bias in spin compensated systems for spintronics applications

Pal,

Dey,

Alam

et al. 2024

Sci Rep

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Antiferromagnetic materials offer potential for spintronic applications due to their resilience to magnetic field perturbations and lack of stray fields. Achieving exchange bias in these materials is crucial for certain applications; however, discovering such materials remains challenging due to their compensated spin structure. The quest for antiferromagnetic materials with exchange bias became a reality through our experimental study and theoretical simulation on $$\hbox {Sr}_2 \hbox {FeIrO}_6$$ Sr 2 FeIrO 6 and $$\hbox {Sr}_2 \hbox {CoIrO}_6$$ Sr 2 CoIrO 6 . This study also unveils the impact of ionic disorder and lattice distortion on magnetic properties. The presence of exchange bias in both materials, given their antiferromagnetic nature, is intriguing. This study opens up new avenues for achieving exchange bias in spin-compensated systems, offering potential for low power and ultra fast antiferromagnetic spintronic applications in future research endeavors.

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Revealing exchange bias in spin compensated systems for spintronics applications

Pal,

Dey,

Alam

et al. 2024

Sci Rep

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Exhibition of magnetic memory effects and exchange bias in nanocrystalline CoSb₂O₄

Banerjee,

Mondal,

et al. 2024

J. Mater. Chem. C

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Surface weak ferromagnet coupling induced giant room-temperature spontaneous exchange bias in antiferromagnet Fe3BO6 polycrystals

Wang,

Cai,

et al. 2024

The Journal of Chemical Physics

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The spontaneous exchange bias effect (SEB) has wide application prospects in information storage technologies. In this study, nanoscale raw materials were used to fabricate antiferromagnetic Fe3BO6 polycrystals. The obtained Fe3BO6 exhibited a large SEB effect, where the value of the spontaneous exchange bias field at room temperature was as large as ∼4234 Oe. The room-temperature training effect, temperature-dependence, and maximum field-dependence of the HSEB were investigated. We propose that this giant SEB originates from the exchange-coupling interactions between the weak ferromagnetic surface state and the bulk antiferromagnetic state. The theoretical analysis results were further verified by comparing the magnetic properties of the Fe3BO6 with relatively low crystallinity. The results of this investigation will help find promising candidate materials for devices based on the SEB effect.

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Essential aspects of the spontaneous exchange bias effect

Cited by 4 publications

References 66 publications

Revealing exchange bias in spin compensated systems for spintronics applications

Revealing exchange bias in spin compensated systems for spintronics applications

Exhibition of magnetic memory effects and exchange bias in nanocrystalline CoSb₂O₄

Surface weak ferromagnet coupling induced giant room-temperature spontaneous exchange bias in antiferromagnet Fe3BO6 polycrystals

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Essential aspects of the spontaneous exchange bias effect

Cited by 4 publications

References 66 publications

Revealing exchange bias in spin compensated systems for spintronics applications

Revealing exchange bias in spin compensated systems for spintronics applications

Exhibition of magnetic memory effects and exchange bias in nanocrystalline CoSb2O4

Surface weak ferromagnet coupling induced giant room-temperature spontaneous exchange bias in antiferromagnet Fe3BO6 polycrystals

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Exhibition of magnetic memory effects and exchange bias in nanocrystalline CoSb₂O₄