Interlayer coupling and magnetic reversal of antiferromagnetically coupled media

被引：30

作者：

Margulies, DT ^{[1
]}

Schabes, ME ^{[1
]}

McChesney, W ^{[1
]}

Fullerton, EE ^{[1
]}

机构：

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

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 01期

关键词：

D O I：

10.1063/1.1431397

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We characterize the interlayer coupling and magnetic reversal of antiferromagnetically coupled recording layers. We show that the granular structure and reduced thickness values of the lower layer result in its reversal being strongly thermally activated at room temperature. We also find that the granular structure of the layers produces large dipolar fields which favor antiparallel alignment of the layer magnetizations. These dipolar fields overcome the ferromagnetic regions in the oscillatory coupling as a function of Ru thickness t(Ru), causing the interlayer coupling to be only antiferromagnetic for t(Ru)>5 Angstrom. (C) 2002 American Institute of Physics.

引用

页码：91 / 93

页数：3

共 13 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] OSCILLATORY INTERLAYER EXCHANGE COUPLING IN CO/RU MULTILAYERS AND BILAYERS [J].

BLOEMEN, PJH ;

VANKESTEREN, HW ;

SWAGTEN, HJM ;

DEJONGE, WJM .

PHYSICAL REVIEW B, 1994, 50 (18) :13505-13514

[3] Antiferromagnetic interlayer correlations in annealed Ni80Fe20/Ag multilayers [J].

Borchers, JA ;

Gehring, PM ;

Erwin, RW ;

Ankner, JF ;

Majkrzak, CF ;

Hylton, TL ;

Coffey, KR ;

Parker, MA ;

Howard, JK .

PHYSICAL REVIEW B, 1996, 54 (14) :9870-9882

[4]

CULLITY BD, 1972, INTRO MAGNETIC MAT, P414

[5] Demonstration of 35 Gbits/in2 in media on glass substrates [J].

Doerner, M ;

Bian, XP ;

Madison, M ;

Tang, K ;

Peng, QZ ;

Polcyn, A ;

Arnoldussen, T ;

Toney, MF ;

Mirzamaani, M ;

Takano, K ;

Fullerton, E ;

Margulies, D ;

Schabes, M ;

Rubin, K ;

Pinarbasi, M ;

Yuan, S ;

Parker, M ;

Weller, D .

IEEE TRANSACTIONS ON MAGNETICS, 2001, 37 (02) :1052-1058

[6] 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

[7] OSCILLATORY INTERLAYER COUPLING AND GIANT MAGNETORESISTANCE IN EPITAXIAL FE/CR(211) AND (100) SUPERLATTICES [J].

FULLERTON, EE ;

CONOVER, MJ ;

MATTSON, JE ;

SOWERS, CH ;

BADER, SD .

PHYSICAL REVIEW B, 1993, 48 (21) :15755-15763

[8] GIANT MAGNETORESISTANCE AT LOW FIELDS IN DISCONTINUOUS NIFE-AG MULTILAYER THIN-FILMS [J].

HYLTON, TL ;

COFFEY, KR ;

PARKER, MA ;

HOWARD, JK .

SCIENCE, 1993, 261 (5124) :1021-1024

[9]

NEEL L, 1962, CR HEBD ACAD SCI, V255, P1676

[10] SPIN ENGINEERING - DIRECT DETERMINATION OF THE RUDERMAN-KITTEL-KASUYA-YOSIDA FAR-FIELD RANGE FUNCTION IN RUTHENIUM [J].

PARKIN, SSP ;

MAURI, D .

PHYSICAL REVIEW B, 1991, 44 (13) :7131-7134

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