Evaporation conditions and magnetic properties of Co-O perpendicular magnetic films

Ota, Yasutomo; Tani, N.; Ishikawa, M.; Yamada, T.; Nakamura, Koshi; Itoh, Akio

doi:10.1109/tmag.1984.1063374

Cited by 22 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The technology introduced oxygen into the Co-alloy thin films, which had a similarity with that of the magnetic tape technology that employed low noise Co-CoO recording layers [80][81][82] .…”

Section: Introductionmentioning

confidence: 99%

Development of Media Nanostructure for Perpendicular Magnetic Recording

Futamoto

Ohtake

2017

J. Magn. Soc. Jpn.

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of Media Nanostructure for Perpendicular Magnetic Recording

Futamoto

Ohtake

2017

J. Magn. Soc. Jpn.

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5][6][7] It has been proven experimentally that an extremely high density recording exceeding 500 kFRPI is possible in perpendicular magnetic recording using a Co-Cr perpendicular media. [1][2][3][4][5][6][7] It has been proven experimentally that an extremely high density recording exceeding 500 kFRPI is possible in perpendicular magnetic recording using a Co-Cr perpendicular media.…”

Section: Introductionmentioning

confidence: 99%

Recording characteristics of Co-γFe2O3 perpendicular magnetic recording media

Yamamoto

Andou

Kurisu

et al. 1996

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

Effect of Au underlayers on perpendicular magnetic anisotropy of CoOx films

Hiratsuka

Taguchi

Ichikawa

et al. 1991

Electron Comm Jpn Pt II

View full text Add to dashboard Cite

Partially oxidized cobalt films were deposited by the reactive evaporation method on an underlayer Au film and on a polymer film with a rough surface. The purpose of this study is to investigate the influence of these underlayers on the structure and perpendicular magnetic anisotropy of the partially oxidized cobalt films. The gold film was sputter‐deposited by using an Au target. The acceleration voltage and sputtering period for Au deposition were varied to form an Au film with different surface textures, i.e., island‐like, mesh‐like, and flat surfaces. CoOx films were deposited on these underlayers. The measurement of the magnetic properties and the SEM observation of the film cross section were carried out. When a CoOx film was deposited on an Au film with an island‐like surface texture, the CoOx film had a columnar structure perpendicular to the underlayer surface and the diameters of the columns were small. Because of this columnar structure, the perpendicular magnetic anisotropy was improved. When a CoOx film was deposited on a polymer film whose surface was roughened by sputter‐etching, the CoOx film had a columnar structure with a small columnar diameter. From the foregoing results, it was found that the columnar structure and perpendicular magnetic anisotropy of a CoOx film can be controlled by changing the surface condition of the underlayer.

show abstract

Evaporation conditions and magnetic properties of Co-O perpendicular magnetic films

Cited by 22 publications

References 3 publications

Development of Media Nanostructure for Perpendicular Magnetic Recording

Development of Media Nanostructure for Perpendicular Magnetic Recording

Recording characteristics of Co-γFe2O3 perpendicular magnetic recording media

Effect of Au underlayers on perpendicular magnetic anisotropy of CoOx films

Contact Info

Product

Resources

About