Marked enhancement of synthetic-antiferromagnetic coupling in subnanocrystalline FeCoB/Ru/FeCoB sputtered films

Atsushi Hashimoto; Shin Saito; Kazumi Omori; Hiroshi Takashima; Tomonori Ueno; Migaku Takahashi

doi:10.1063/1.2234294

Marked enhancement of synthetic-antiferromagnetic coupling in subnanocrystalline FeCoB/Ru/FeCoB sputtered films

Atsushi Hashimoto, Shin Saito, Kazumi Omori, Hiroshi Takashima, Tomonori Ueno, Migaku Takahashi

ENG - Electronic Engineering

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

14 Citations (Scopus)

Abstract

Extremely large flopping field and saturation field were realized in an FeCoB/Ru/FeCoB sputtered film by using subnanocrystalline (Fe ₆₅Co₃₅)₈₈B₁₂ soft magnetic material with high saturation magnetization. Phenomenological analysis of synthetic-antiferromagnetic coupling revealed that the bilinear coupling energy induced in this film was three times larger than that in a Co ₉₁Zr₄Nb₅/Ru/Co₉₁Zr ₄Nb₅ film. This large bilinear coupling is thought to be the result of not only the suppression of ferromagnetic coupling due to the flat interface between the Ru and FeCoB layers but also the small Ru thickness for the first peak of 0.3 nm caused by the Fe-rich soft magnetic material.

Original language	English
Article number	032511
Journal	Applied Physics Letters
Volume	89
Issue number	3
DOIs	https://doi.org/10.1063/1.2234294
Publication status	Published - 2006

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10.1063/1.2234294

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abstract = "Extremely large flopping field and saturation field were realized in an FeCoB/Ru/FeCoB sputtered film by using subnanocrystalline (Fe 65Co35)88B12 soft magnetic material with high saturation magnetization. Phenomenological analysis of synthetic-antiferromagnetic coupling revealed that the bilinear coupling energy induced in this film was three times larger than that in a Co 91Zr4Nb5/Ru/Co91Zr 4Nb5 film. This large bilinear coupling is thought to be the result of not only the suppression of ferromagnetic coupling due to the flat interface between the Ru and FeCoB layers but also the small Ru thickness for the first peak of 0.3 nm caused by the Fe-rich soft magnetic material.",

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T1 - Marked enhancement of synthetic-antiferromagnetic coupling in subnanocrystalline FeCoB/Ru/FeCoB sputtered films

AU - Hashimoto, Atsushi

AU - Saito, Shin

AU - Omori, Kazumi

AU - Takashima, Hiroshi

AU - Ueno, Tomonori

AU - Takahashi, Migaku

PY - 2006

Y1 - 2006

N2 - Extremely large flopping field and saturation field were realized in an FeCoB/Ru/FeCoB sputtered film by using subnanocrystalline (Fe 65Co35)88B12 soft magnetic material with high saturation magnetization. Phenomenological analysis of synthetic-antiferromagnetic coupling revealed that the bilinear coupling energy induced in this film was three times larger than that in a Co 91Zr4Nb5/Ru/Co91Zr 4Nb5 film. This large bilinear coupling is thought to be the result of not only the suppression of ferromagnetic coupling due to the flat interface between the Ru and FeCoB layers but also the small Ru thickness for the first peak of 0.3 nm caused by the Fe-rich soft magnetic material.

AB - Extremely large flopping field and saturation field were realized in an FeCoB/Ru/FeCoB sputtered film by using subnanocrystalline (Fe 65Co35)88B12 soft magnetic material with high saturation magnetization. Phenomenological analysis of synthetic-antiferromagnetic coupling revealed that the bilinear coupling energy induced in this film was three times larger than that in a Co 91Zr4Nb5/Ru/Co91Zr 4Nb5 film. This large bilinear coupling is thought to be the result of not only the suppression of ferromagnetic coupling due to the flat interface between the Ru and FeCoB layers but also the small Ru thickness for the first peak of 0.3 nm caused by the Fe-rich soft magnetic material.

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Marked enhancement of synthetic-antiferromagnetic coupling in subnanocrystalline FeCoB/Ru/FeCoB sputtered films

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