Co-P electrodeposited alumite films with in-plane magnetization

Hideo Daimon; Osamu Kitakami; Osamu Inagoya; Akito Sakemoto; Kunio Mizushima

doi:10.1143/JJAP.29.1675

Co-P electrodeposited alumite films with in-plane magnetization

Hideo Daimon, Osamu Kitakami, Osamu Inagoya, Akito Sakemoto, Kunio Mizushima

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The magnetic properties and corrosion resistance of a magnetic alumite film, in which micropores are filled with Co, are investigated. It is found that in-plane magnetizatlon film is obtained by adding a small amount of P to the Co. For example, the effective anisotropy energy of the film changes from +0.44×10⁵ erg/cm³ to -1.32×10⁵ erg/cm³ by the addition of 8 at.% P. The in-plane coercivity of the film can be controlled between 340 Oe and 1350 Oe by the P content. The corrosion resistance of the film filled with Co₉₄P₆ under the atmosphere of 40°C, 90% R. H. with 10 ppm SO₂ gas is tested. The corrosion resistance of the film under this condition is superior to that of sputtered Co-Ni thin film media with a carbon protective layer. Magnetic alumite film filled with Co-P alloy is considered to be a candidate for longitudinal magnetic recording media.

Original language	English
Pages (from-to)	1675-1679
Number of pages	5
Journal	Japanese journal of applied physics
Volume	29
Issue number	9R
DOIs	https://doi.org/10.1143/JJAP.29.1675
Publication status	Published - 1990 Sep
Externally published	Yes

Keywords

Co-electrodeposited alumite films
Corrosion resistance
In-plane magnetization film
Magnetic properties

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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title = "Co-P electrodeposited alumite films with in-plane magnetization",

abstract = "The magnetic properties and corrosion resistance of a magnetic alumite film, in which micropores are filled with Co, are investigated. It is found that in-plane magnetizatlon film is obtained by adding a small amount of P to the Co. For example, the effective anisotropy energy of the film changes from +0.44×105 erg/cm3 to -1.32×105 erg/cm3 by the addition of 8 at.% P. The in-plane coercivity of the film can be controlled between 340 Oe and 1350 Oe by the P content. The corrosion resistance of the film filled with Co94P6 under the atmosphere of 40°C, 90% R. H. with 10 ppm SO2 gas is tested. The corrosion resistance of the film under this condition is superior to that of sputtered Co-Ni thin film media with a carbon protective layer. Magnetic alumite film filled with Co-P alloy is considered to be a candidate for longitudinal magnetic recording media.",

keywords = "Co-electrodeposited alumite films, Corrosion resistance, In-plane magnetization film, Magnetic properties",

author = "Hideo Daimon and Osamu Kitakami and Osamu Inagoya and Akito Sakemoto and Kunio Mizushima",

year = "1990",

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T1 - Co-P electrodeposited alumite films with in-plane magnetization

AU - Daimon, Hideo

AU - Kitakami, Osamu

AU - Inagoya, Osamu

AU - Sakemoto, Akito

AU - Mizushima, Kunio

PY - 1990/9

Y1 - 1990/9

N2 - The magnetic properties and corrosion resistance of a magnetic alumite film, in which micropores are filled with Co, are investigated. It is found that in-plane magnetizatlon film is obtained by adding a small amount of P to the Co. For example, the effective anisotropy energy of the film changes from +0.44×105 erg/cm3 to -1.32×105 erg/cm3 by the addition of 8 at.% P. The in-plane coercivity of the film can be controlled between 340 Oe and 1350 Oe by the P content. The corrosion resistance of the film filled with Co94P6 under the atmosphere of 40°C, 90% R. H. with 10 ppm SO2 gas is tested. The corrosion resistance of the film under this condition is superior to that of sputtered Co-Ni thin film media with a carbon protective layer. Magnetic alumite film filled with Co-P alloy is considered to be a candidate for longitudinal magnetic recording media.

AB - The magnetic properties and corrosion resistance of a magnetic alumite film, in which micropores are filled with Co, are investigated. It is found that in-plane magnetizatlon film is obtained by adding a small amount of P to the Co. For example, the effective anisotropy energy of the film changes from +0.44×105 erg/cm3 to -1.32×105 erg/cm3 by the addition of 8 at.% P. The in-plane coercivity of the film can be controlled between 340 Oe and 1350 Oe by the P content. The corrosion resistance of the film filled with Co94P6 under the atmosphere of 40°C, 90% R. H. with 10 ppm SO2 gas is tested. The corrosion resistance of the film under this condition is superior to that of sputtered Co-Ni thin film media with a carbon protective layer. Magnetic alumite film filled with Co-P alloy is considered to be a candidate for longitudinal magnetic recording media.

KW - Co-electrodeposited alumite films

KW - Corrosion resistance

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