Indirect exchange coupling between Co and Gd across nonmagnetic interlayers in Co/X/Gd/X multilayers (X=Ag, Au and W)

Masashi Ohba; Koki Takanashi; Hiroyasu Fujimori

Indirect exchange coupling between Co and Gd across nonmagnetic interlayers in Co/X/Gd/X multilayers (X=Ag, Au and W)

Masashi Ohba, Koki Takanashi, Hiroyasu Fujimori

金属材料研究所・物質創製研究部

研究成果: Article › 査読

抄録

We have investigated the indirect exchange coupling between Co and Gd across nonmagnetic interlayers in Co/X/Gd/X multilayers (X=Ag, Au and W). The strength of the coupling J_Co-Gd decreases with increasing the interlayer thickness /x for all Xs. However, the manner of the decrease depends strongly on X: J_Co-Gd decreases slowly for X=Ag and Au, and the coupling remains even for t_x≥10 Å. On the other hand, J_Co-Gd shows a drastic decrease for X=W, and the coupling disappears for t_x≥5 Å. The origin for the difference is attributable to the electronic structures of interlayers.

本文言語	English
ページ（範囲）	157-160
ページ数	4
ジャーナル	Science Reports of the Rerearch Institutes Tohoku University Series A-Physics
巻	42
号	1
出版ステータス	Published - 1996 3月 1

ASJC Scopus subject areas

凝縮系物理学
金属および合金

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abstract = "We have investigated the indirect exchange coupling between Co and Gd across nonmagnetic interlayers in Co/X/Gd/X multilayers (X=Ag, Au and W). The strength of the coupling JCo-Gd decreases with increasing the interlayer thickness /x for all Xs. However, the manner of the decrease depends strongly on X: JCo-Gd decreases slowly for X=Ag and Au, and the coupling remains even for tx≥10 {\AA}. On the other hand, JCo-Gd shows a drastic decrease for X=W, and the coupling disappears for tx≥5 {\AA}. The origin for the difference is attributable to the electronic structures of interlayers.",

keywords = "Co, Gd, Indirect exchange coupling, Interlayers, Multilayers",

author = "Masashi Ohba and Koki Takanashi and Hiroyasu Fujimori",

year = "1996",

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T1 - Indirect exchange coupling between Co and Gd across nonmagnetic interlayers in Co/X/Gd/X multilayers (X=Ag, Au and W)

AU - Ohba, Masashi

AU - Takanashi, Koki

AU - Fujimori, Hiroyasu

PY - 1996/3/1

Y1 - 1996/3/1

N2 - We have investigated the indirect exchange coupling between Co and Gd across nonmagnetic interlayers in Co/X/Gd/X multilayers (X=Ag, Au and W). The strength of the coupling JCo-Gd decreases with increasing the interlayer thickness /x for all Xs. However, the manner of the decrease depends strongly on X: JCo-Gd decreases slowly for X=Ag and Au, and the coupling remains even for tx≥10 Å. On the other hand, JCo-Gd shows a drastic decrease for X=W, and the coupling disappears for tx≥5 Å. The origin for the difference is attributable to the electronic structures of interlayers.

AB - We have investigated the indirect exchange coupling between Co and Gd across nonmagnetic interlayers in Co/X/Gd/X multilayers (X=Ag, Au and W). The strength of the coupling JCo-Gd decreases with increasing the interlayer thickness /x for all Xs. However, the manner of the decrease depends strongly on X: JCo-Gd decreases slowly for X=Ag and Au, and the coupling remains even for tx≥10 Å. On the other hand, JCo-Gd shows a drastic decrease for X=W, and the coupling disappears for tx≥5 Å. The origin for the difference is attributable to the electronic structures of interlayers.

KW - Co

KW - Gd

KW - Indirect exchange coupling

KW - Interlayers

KW - Multilayers

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Indirect exchange coupling between Co and Gd across nonmagnetic interlayers in Co/X/Gd/X multilayers (X=Ag, Au and W)

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