Enhancement of magnetic properties of Co/Pd multilayered perpendicular magnetic recording media by using Pd/Si dual seedlayer

J. Kawaji, Toru Asahi, T. Onoue, J. Sayama, J. Hokkyo, Tetsuya Osaka, K. Ouchi

研究成果: Article

18 引用 (Scopus)

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Effects of the introduction of a Pd/Si dual seedlayer on the microcrystalline structure and magnetic properties of [Co/Pd]n multilayered perpendicular magnetic recording media were investigated. The Pd/Si dual seedlayer was composed of a Pd upper seedlayer and a Si under seedlayer. The Pd upper seedlayer with a thickness of up to 10 nm markedly increased the coercivity of [Co/Pd]n multilayered media in the direction perpendicular to the film surface. The highest coercivity of 7.8 kOe was obtained for the [Co/Pd]10 medium with a Pd (10 nm)/Si (100 nm) dual seedlayer. The Pd upper seedlayer not only facilitated the formation of regular interfaces between the Co and Pd layers, but also reduced the thickness of the deteriorated initial layer in the [Co/Pd]n multilayer, resulting in enhancement of the magnetic anisotropy field. The [Co/Pd]n multilayered medium with the Pd/Si dual seedlayer exhibited weak intergranular exchange coupling between [Co/Pd]n grains, which led to excellent read-write characteristics.

元の言語English
ページ(範囲)220-228
ページ数9
ジャーナルJournal of Magnetism and Magnetic Materials
251
発行部数2
DOI
出版物ステータスPublished - 2002 10

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Magnetic recording
magnetic recording
Coercive force
Magnetic properties
magnetic properties
Exchange coupling
coercivity
augmentation
Magnetic anisotropy
Multilayers
anisotropy
Direction compound

ASJC Scopus subject areas

  • Condensed Matter Physics

これを引用

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abstract = "Effects of the introduction of a Pd/Si dual seedlayer on the microcrystalline structure and magnetic properties of [Co/Pd]n multilayered perpendicular magnetic recording media were investigated. The Pd/Si dual seedlayer was composed of a Pd upper seedlayer and a Si under seedlayer. The Pd upper seedlayer with a thickness of up to 10 nm markedly increased the coercivity of [Co/Pd]n multilayered media in the direction perpendicular to the film surface. The highest coercivity of 7.8 kOe was obtained for the [Co/Pd]10 medium with a Pd (10 nm)/Si (100 nm) dual seedlayer. The Pd upper seedlayer not only facilitated the formation of regular interfaces between the Co and Pd layers, but also reduced the thickness of the deteriorated initial layer in the [Co/Pd]n multilayer, resulting in enhancement of the magnetic anisotropy field. The [Co/Pd]n multilayered medium with the Pd/Si dual seedlayer exhibited weak intergranular exchange coupling between [Co/Pd]n grains, which led to excellent read-write characteristics.",
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T1 - Enhancement of magnetic properties of Co/Pd multilayered perpendicular magnetic recording media by using Pd/Si dual seedlayer

AU - Kawaji, J.

AU - Asahi, Toru

AU - Onoue, T.

AU - Sayama, J.

AU - Hokkyo, J.

AU - Osaka, Tetsuya

AU - Ouchi, K.

PY - 2002/10

Y1 - 2002/10

N2 - Effects of the introduction of a Pd/Si dual seedlayer on the microcrystalline structure and magnetic properties of [Co/Pd]n multilayered perpendicular magnetic recording media were investigated. The Pd/Si dual seedlayer was composed of a Pd upper seedlayer and a Si under seedlayer. The Pd upper seedlayer with a thickness of up to 10 nm markedly increased the coercivity of [Co/Pd]n multilayered media in the direction perpendicular to the film surface. The highest coercivity of 7.8 kOe was obtained for the [Co/Pd]10 medium with a Pd (10 nm)/Si (100 nm) dual seedlayer. The Pd upper seedlayer not only facilitated the formation of regular interfaces between the Co and Pd layers, but also reduced the thickness of the deteriorated initial layer in the [Co/Pd]n multilayer, resulting in enhancement of the magnetic anisotropy field. The [Co/Pd]n multilayered medium with the Pd/Si dual seedlayer exhibited weak intergranular exchange coupling between [Co/Pd]n grains, which led to excellent read-write characteristics.

AB - Effects of the introduction of a Pd/Si dual seedlayer on the microcrystalline structure and magnetic properties of [Co/Pd]n multilayered perpendicular magnetic recording media were investigated. The Pd/Si dual seedlayer was composed of a Pd upper seedlayer and a Si under seedlayer. The Pd upper seedlayer with a thickness of up to 10 nm markedly increased the coercivity of [Co/Pd]n multilayered media in the direction perpendicular to the film surface. The highest coercivity of 7.8 kOe was obtained for the [Co/Pd]10 medium with a Pd (10 nm)/Si (100 nm) dual seedlayer. The Pd upper seedlayer not only facilitated the formation of regular interfaces between the Co and Pd layers, but also reduced the thickness of the deteriorated initial layer in the [Co/Pd]n multilayer, resulting in enhancement of the magnetic anisotropy field. The [Co/Pd]n multilayered medium with the Pd/Si dual seedlayer exhibited weak intergranular exchange coupling between [Co/Pd]n grains, which led to excellent read-write characteristics.

KW - Co/Pd multilayered film

KW - Coercivity

KW - Magnetic anisotropy

KW - Pd/Si dual seedlayer

KW - Perpendicular magnetic recording media

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