Antiferromagnetically coupled perpendicular recording media

被引：34

作者：

Girt, E ^{[1
]}

Richter, HJ ^{[1
]}

机构：

[1] Seagate Recording Media, Fremont, CA 94538 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2003年 / 39卷 / 05期

关键词：

antiferromagnetically coupled (AFC) media; Ruderman-Kittel-Kasuya-Yosida (RKKY) coupling; thermal stability;

D O I：

10.1109/TMAG.2003.816280

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We demonstrate that the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction can be used to improve the stability of perpendicular recording media-Both the nucleation field and the coercivity in the perpendicular direction increase due to the antiferromagnetic coupling (AFC). Analogous to longitudinal AFC media, it is observed that the magnetization of the stabilization layer slowly relaxes to the antiparallel state. This relaxation is primarily driven by the demagnetizing fields in the stabilization layer and hence becomes slower with increasing bit density.

引用

收藏

页码：2306 / 2310

页数：5

相关论文

共 12 条

[1] Longitudinal magnetic recording media with thermal stabilization layers [J].

Abarra, EN ;

Inomata, A ;

Sato, H ;

Okamoto, I ;

Mizoshita, Y .

APPLIED PHYSICS LETTERS, 2000, 77 (16) :2581-2583

[2] HIGH-COERCIVITY CO/PD MULTILAYER FILMS BY HEAVY INERT-GAS SPUTTERING [J].

BRUCKER, CF .

JOURNAL OF APPLIED PHYSICS, 1991, 70 (10) :6065-6067

[3]

CARCIA PF, 1992, APPL PHYS COMM, V11, P531

[4] Antiferromagnetically coupled magnetic media layers for thermally stable high-density recording [J].

Fullerton, EE ;

Margulies, DT ;

Schabes, ME ;

Carey, M ;

Gurney, B ;

Moser, A ;

Best, M ;

Zeltzer, G ;

Rubin, K ;

Rosen, H ;

Doerner, M .

APPLIED PHYSICS LETTERS, 2000, 77 (23) :3806-3808

[5] UNAMBIGUOUS EVIDENCE OF OSCILLATORY MAGNETIC COUPLING BETWEEN CO LAYERS IN ULTRAHIGH-VACUUM GROWN CO/AU(111)/CO TRILAYERS [J].

GROLIER, V ;

RENARD, D ;

BARTENLIAN, B ;

BEAUVILLAIN, P ;

CHAPPERT, C ;

DUPAS, C ;

FERRE, J ;

GALTIER, M ;

KOLB, E ;

MULLOY, M ;

RENARD, JP ;

VEILLET, P .

PHYSICAL REVIEW LETTERS, 1993, 71 (18) :3023-3026

[6] MAGNETIC ANISOTROPIES AND EXCHANGE COUPLING IN ULTRATHIN FCC CO(001) STRUCTURES [J].

HEINRICH, B ;

COCHRAN, JF ;

KOWALEWSKI, M ;

KIRSCHNER, J ;

CELINSKI, Z ;

ARROTT, AS ;

MYRTLE, K .

PHYSICAL REVIEW B, 1991, 44 (17) :9348-9361

[7] SYSTEMATIC VARIATION OF THE STRENGTH AND OSCILLATION PERIOD OF INDIRECT MAGNETIC EXCHANGE COUPLING THROUGH THE 3D, 4D, AND 5D TRANSITION-METALS [J].

PARKIN, SSP .

PHYSICAL REVIEW LETTERS, 1991, 67 (25) :3598-3601

[8] How antiferromagnetic coupling can stabilize recorded information [J].

Richter, HJ ;

Girt, E .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (05) :1867-1872

[9] Simplified analysis of two-layer antiferromagnetically coupled media [J].

Richter, HJ ;

Girt, E ;

Zhou, H .

APPLIED PHYSICS LETTERS, 2002, 80 (14) :2529-2531

[10] Dynamic coercivity effects in thin film media [J].

Richter, HJ ;

Wu, SZ ;

Malmhall, R .

IEEE TRANSACTIONS ON MAGNETICS, 1998, 34 (04) :1540-1542