Pt and Pd intermediate layers for controlling Co–Cr–Nb–Pt layer growth in double layered perpendicular magnetic recording media

Ariake, J.; Honda, N.; Ouchi, Kazuhiro; Iwasaki, S.

doi:10.1016/s0304-8853(01)01229-x

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…Underlayer materials were then extended to nonmagnetic hcp-CoCr 31,32) , hcpRu 30,33) , fcc-Au, fcc-Al 34) , fcc-Pt 35) , etc. and dualunderlayer structures; Ti/Ge 36) , CoCr/TiCr 37,38) , Co3O4/Pt 35) , Pt/Ti 39) , Pd/Ti 40) , CoCrRu/TiCr 41) , Ru/Ta 42,43) , Ru-oxide/Ru 44) , etc. for the preparation of PMR media.…”

Section: Introductionunclassified

Development of Media Nanostructure for Perpendicular Magnetic Recording

Futamoto

Ohtake

2017

J. Magn. Soc. Jpn.

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The review covers the research and development of perpendicular media nanostructure focusing on the recording layer. The recording layer material includes the Co-alloys with hcp structure, the magnetic multilayers, and the alloys with ordered structures that have high magneto-crystalline anisotropies (Ku). The technologies of underlayer or interlayer for aligning the easy magnetization axis of magnetic crystal grain perpendicular to the film plane are briefly reviewed including the high Ku magnetic materials for future recording media.Observations of compositional and magnetization structures in sub-µm scale have played important roles in improving the recording layer. Typical data on these characteristics are explained in relation to the media structure improvements. Considering that high Ku magnetic materials will be employed in future recording media, basic experimental results related in controlling the easy magnetization axis and in keeping the surface flatness of L10-ordered magnetic materials are explained. Future possibilities for increasing the areal density beyond 1 Tb/in 2 by improving the magnetic material and the nanostructure of recording layer are also discussed.

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Section: Introductionunclassified

Development of Media Nanostructure for Perpendicular Magnetic Recording

Futamoto

Ohtake

2017

J. Magn. Soc. Jpn.

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“…Due to their importance as candidates for high storage media, CoCr thin films have been intensively investigated during the last decades, from fundamental and technological double points of view. The improvements of the magnetic properties of the binary CoCr, or the ternary CoCrPt, CoCrTi…were done due to the arising of modern and efficient elaboration procedures and analysis techniques [1][2][3][4][5]. These properties depend deeply on the elaboration conditions and are influenced by the structural and morphological properties.…”

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of Annealed Vapor Deposited CoxCr1-x Thin Films

Kharmouche

2015

SSP

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Abstract. We prepared, under vacuum and onto monocrystalline silicone and glass substrates, series of CoxCr1-x thin films, with x ranging from 0.80 to 0.88. The structural and magnetic properties of the as deposited films have been performed using Rutherford backscattering spectrometry (R.B.S.), X-ray diffraction (X.R.D.), Alternating Gradient Field Magnetometer (A.G.F.M.), and Brillouin Light Spectrometry (B.L.S.) techniques. Once the films being annealed under vacuum, for 1 h at 700°C, in a pre-heated furnace, their structural and magnetic properties have been performed, by these tools, as well. Significant results have been found. The as deposited films present only an HCP structure and show a preferred orientation. The annealed films present both HCP and FCC structures. The annealed films possess cell parameters greater than the bulk ones which infer that they are under a tensile stress. The cell parameters of the as deposited films are lower than the bulk ones which infer that they are under a compressive stress. Up to the annealing temperature the films are still ferromagnetic and some decrease of the magnetic moment is noticed. In addition, coercivity and squareness have been strongly improved in the annealed films comparatively to the as deposited films. Moreover, the stiffness constant, computed using Brillouin light scattering measurements and after adjustment of theoretical and experimental results, is found to be far lesser than pure Co one. These results and others will be presented and discussed.

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Advancements in PMR thin-film media

Judy

2005

Journal of Magnetism and Magnetic Materials

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Pt and Pd intermediate layers for controlling Co–Cr–Nb–Pt layer growth in double layered perpendicular magnetic recording media

Cited by 6 publications

References 13 publications

Development of Media Nanostructure for Perpendicular Magnetic Recording

Development of Media Nanostructure for Perpendicular Magnetic Recording

Structural and Magnetic Properties of Annealed Vapor Deposited Co<sub>x</sub>Cr<sub>1-x</sub> Thin Films<sub></sub>

Advancements in PMR thin-film media

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