Co1-xCrx/Pt multilayers as perpendicular recording media

被引：22

作者：

Takano, K ^{[1
]}

Zeltzer, G ^{[1
]}

Weller, DK ^{[1
]}

Fullerton, EE ^{[1
]}

机构：

[1] IBM Corp, Almaden Res Ctr, Div Res, San Jose, CA 95120 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 09期

关键词：

D O I：

10.1063/1.372707

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated Co1-xCrx/Pt multilayers as potential perpendicular media capable of high-density magnetic recording. The films exhibited strong perpendicular anisotropy, coercivity values ranging from 0.3 to 6.9 kOe, and a range of coercive squareness (S*) from 0.21 to 0.96. Magnetic and atomic force microscopy were used to correlate the grain and magnetic domain structures. The degree of intergranular exchange is clearly dependent on the deposition temperature and, to a lesser extent, Cr content. Co1-xCrx/Pt multilayers are ferromagnetic at room temperature for x > 30%, which is not observed in thick Co1-xCrx films. Initial recording results determined a SONR ratio of 23 dB for a [Co(4 Angstrom)/Pt(5 Angstrom)](10) multilayer recorded at 10 kiloflux changes per millimeter using a standard longitudinal ring head. (C) 2000 American Institute of Physics. [S0021-8979(00)46108-6].

引用

页码：6364 / 6366

页数：3

共 10 条

[1]

BADER SD, 1994, ULTRATHIN MAGNETIC S, V2, pCH4

[2]

BERTRAM N, 1999, UNPUB MAGN REC C 9 1

[3] Thermal stability of Co/Pt multilayers [J].

Chen, XF ;

Kryder, MH .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (08) :5006-5008

[4] Recording at 300 KFCI with perpendicular co-alloy multilayers [J].

Ho, K ;

Lairson, BM ;

Kim, YK ;

Noyes, GI ;

Sun, SY .

IEEE TRANSACTIONS ON MAGNETICS, 1998, 34 (04) :1854-1856

[5]

HURST JE, 1993, JPN J APPL PHYS 1, V32, P5301

[6] ANALYSIS FOR MAGNETIZATION MODE FOR HIGH-DENSITY MAGNETIC RECORDING [J].

IWASAKI, S ;

NAKAMURA, Y .

IEEE TRANSACTIONS ON MAGNETICS, 1977, 13 (05) :1272-1277

[7] Magnetic anisotropy in metallic multilayers [J].

Johnson, MT ;

Bloemen, PJH ;

denBroeder, FJA ;

deVries, JJ .

REPORTS ON PROGRESS IN PHYSICS, 1996, 59 (11) :1409-1458

[8] Phase separation in a two-dimensional Co-Cr alloy [J].

Kahng, SJ ;

Choi, YJ ;

Park, JY ;

Kuk, Y .

APPLIED PHYSICS LETTERS, 1999, 74 (08) :1087-1089

[9] MOSSBAUER-EFFECT DETERMINATION OF CHEMICAL SEGREGATION IN SPUTTERED CO-CR FILMS [J].

PARKER, FT ;

OESTERREICHER, H ;

FULLERTON, E .

JOURNAL OF APPLIED PHYSICS, 1989, 66 (12) :5988-6000

[10]

WU L, 1997, J MAGN SOC JPN, V21, P301

← 1 →