Saturation magnetization and uniaxial magnetocrystalline anisotropy for Co-based binary and Co-Ge-Cr ternary alloys

M. Takahashi; H. Shoji; S. Kadowaki; D. D. Djayaprawira; Y. Komori; H. Domon

doi:10.1063/1.126676

Saturation magnetization and uniaxial magnetocrystalline anisotropy for Co-based binary and Co-Ge-Cr ternary alloys

M. Takahashi, H. Shoji, S. Kadowaki, D. D. Djayaprawira, Y. Komori, H. Domon

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

12 Citations (Scopus)

Abstract

In order to develop a magnetic material for high-density magnetic recording media which overcomes the thermal agitation effect, the magnetic properties, such as saturation magnetization and magnetic anisotropy, were evaluated for Co-M (M = Pt, Pd, Ru, Rh, Os, Cr, Ge, Mo, Mn, Re, and Si) binary alloys. Ge addition was found to be effective in maintaining the value of the magnetic anisotropy field of Co. Furthermore, a ternary magnetic alloy of Co-Ge-Cr (85 at. % Co, 10 at. % Ge, 5 at. % Cr) was found to have the following magnetic properties: K^grain_u ≥ 3 × 10⁶ erg/cm³, H^grain_k ≈ 10kOe, and 4 π M _s/H^grain_k < 1.0. This magnetic material is a very promising candidate for use in high-density magnetic recording media.

Original language	English
Pages (from-to)	3457-3459
Number of pages	3
Journal	Applied Physics Letters
Volume	76
Issue number	23
DOIs	https://doi.org/10.1063/1.126676
Publication status	Published - 2000 Jun 5

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.126676

Cite this

@article{5a67527e00864af8a434cf6bc1edd4ef,

title = "Saturation magnetization and uniaxial magnetocrystalline anisotropy for Co-based binary and Co-Ge-Cr ternary alloys",

abstract = "In order to develop a magnetic material for high-density magnetic recording media which overcomes the thermal agitation effect, the magnetic properties, such as saturation magnetization and magnetic anisotropy, were evaluated for Co-M (M = Pt, Pd, Ru, Rh, Os, Cr, Ge, Mo, Mn, Re, and Si) binary alloys. Ge addition was found to be effective in maintaining the value of the magnetic anisotropy field of Co. Furthermore, a ternary magnetic alloy of Co-Ge-Cr (85 at. % Co, 10 at. % Ge, 5 at. % Cr) was found to have the following magnetic properties: Kgrainu ≥ 3 × 106 erg/cm3, Hgraink ≈ 10kOe, and 4 π M s/Hgraink < 1.0. This magnetic material is a very promising candidate for use in high-density magnetic recording media.",

author = "M. Takahashi and H. Shoji and S. Kadowaki and Djayaprawira, {D. D.} and Y. Komori and H. Domon",

year = "2000",

month = jun,

day = "5",

doi = "10.1063/1.126676",

language = "English",

volume = "76",

pages = "3457--3459",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "23",

}

TY - JOUR

T1 - Saturation magnetization and uniaxial magnetocrystalline anisotropy for Co-based binary and Co-Ge-Cr ternary alloys

AU - Takahashi, M.

AU - Shoji, H.

AU - Kadowaki, S.

AU - Djayaprawira, D. D.

AU - Komori, Y.

AU - Domon, H.

PY - 2000/6/5

Y1 - 2000/6/5

N2 - In order to develop a magnetic material for high-density magnetic recording media which overcomes the thermal agitation effect, the magnetic properties, such as saturation magnetization and magnetic anisotropy, were evaluated for Co-M (M = Pt, Pd, Ru, Rh, Os, Cr, Ge, Mo, Mn, Re, and Si) binary alloys. Ge addition was found to be effective in maintaining the value of the magnetic anisotropy field of Co. Furthermore, a ternary magnetic alloy of Co-Ge-Cr (85 at. % Co, 10 at. % Ge, 5 at. % Cr) was found to have the following magnetic properties: Kgrainu ≥ 3 × 106 erg/cm3, Hgraink ≈ 10kOe, and 4 π M s/Hgraink < 1.0. This magnetic material is a very promising candidate for use in high-density magnetic recording media.

AB - In order to develop a magnetic material for high-density magnetic recording media which overcomes the thermal agitation effect, the magnetic properties, such as saturation magnetization and magnetic anisotropy, were evaluated for Co-M (M = Pt, Pd, Ru, Rh, Os, Cr, Ge, Mo, Mn, Re, and Si) binary alloys. Ge addition was found to be effective in maintaining the value of the magnetic anisotropy field of Co. Furthermore, a ternary magnetic alloy of Co-Ge-Cr (85 at. % Co, 10 at. % Ge, 5 at. % Cr) was found to have the following magnetic properties: Kgrainu ≥ 3 × 106 erg/cm3, Hgraink ≈ 10kOe, and 4 π M s/Hgraink < 1.0. This magnetic material is a very promising candidate for use in high-density magnetic recording media.

UR - http://www.scopus.com/inward/record.url?scp=0001639622&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001639622&partnerID=8YFLogxK

U2 - 10.1063/1.126676

DO - 10.1063/1.126676

M3 - Article

AN - SCOPUS:0001639622

SN - 0003-6951

VL - 76

SP - 3457

EP - 3459

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

ER -

Saturation magnetization and uniaxial magnetocrystalline anisotropy for Co-based binary and Co-Ge-Cr ternary alloys

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this