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.
| Original language | English |
|---|---|
| Pages (from-to) | 220-228 |
| Number of pages | 9 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 251 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2002 Oct |
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Keywords
- Co/Pd multilayered film
- Coercivity
- Magnetic anisotropy
- Pd/Si dual seedlayer
- Perpendicular magnetic recording media
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Enhancement of magnetic properties of Co/Pd multilayered perpendicular magnetic recording media by using Pd/Si dual seedlayer. / Kawaji, J.; Asahi, Toru; Onoue, T.; Sayama, J.; Hokkyo, J.; Osaka, Tetsuya; Ouchi, K.
In: Journal of Magnetism and Magnetic Materials, Vol. 251, No. 2, 10.2002, p. 220-228.Research output: Contribution to journal › Article
}
TY - JOUR
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
UR - http://www.scopus.com/inward/record.url?scp=0036802069&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036802069&partnerID=8YFLogxK
U2 - 10.1016/S0304-8853(02)00586-3
DO - 10.1016/S0304-8853(02)00586-3
M3 - Article
AN - SCOPUS:0036802069
VL - 251
SP - 220
EP - 228
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 2
ER -