Dynamic coercivity effects in thin film media

被引：58

作者：

Richter, HJ ^{[1
]}

Wu, SZ ^{[1
]}

Malmhall, R ^{[1
]}

机构：

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

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1998年 / 34卷 / 04期

关键词：

magnetic viscosity; reptation; reverse dc erase noise; thin film media;

D O I：

10.1109/20.706608

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：

A non-destructive technique to measure the time dependence of remanent coercivity in thin film disks is suggested. It is found that typical thin film recording media show an increase in coercivity of about 25% when the length of the field pulse is decreased from similar to 50 ms down to 10 ns. Very thin magnetic films are found to have considerably larger changes in coercivity than thicker ones.

引用

页码：1540 / 1542

页数：3

共 11 条

[1] NOISE CHARACTERISTICS IN LONGITUDINAL THIN-FILM MEDIA [J].

AOI, H ;

SAITOH, M ;

NISHIYAMA, N ;

TSUCHIYA, R ;

TAMURA, T .

IEEE TRANSACTIONS ON MAGNETICS, 1986, 22 (05) :895-897

[2] DC MODULATION NOISE IN THIN METALLIC MEDIA AND ITS APPLICATION FOR HEAD EFFICIENCY MEASUREMENTS [J].

BERTRAM, HN ;

HALLAMASEK, K ;

MADRID, M .

IEEE TRANSACTIONS ON MAGNETICS, 1986, 22 (04) :247-252

[3] Thermal stability of recorded information at high densities [J].

Charap, SH ;

Lu, PL ;

He, YJ .

IEEE TRANSACTIONS ON MAGNETICS, 1997, 33 (01) :978-983

[4] REPTATION AND VISCOSITY IN PARTICULATE RECORDING MEDIA IN THE TIME-LIMITED SWITCHING REGIME [J].

DOYLE, WD ;

VARGA, L ;

HE, L ;

FLANDERS, PJ .

JOURNAL OF APPLIED PHYSICS, 1994, 75 (10) :5547-5549

[5]

DOYLE WD, 1998, INT C

[6] REPTATION EFFECTS IN PARTICULATE SYSTEMS .1. THEORETICAL PREDICTIONS [J].

ELHILO, M ;

OGRADY, K ;

CHANTRELL, RW .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (10) :6653-6655

[7] SPATIALLY RESOLVED, INSITU MEASUREMENTS OF THE COERCIVE FORCE OF THIN-FILM MAGNETIC MEDIA [J].

FISHER, RD ;

PRESSESKY, JL .

IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (05) :3414-3416

[8] PARTICLE SIZE DEPENDENCE OF COERCIVITY AND REMANENCE OF SINGLE-DOMAIN PARTICLES [J].

KNELLER, EF ;

LUBORSKY, FE .

JOURNAL OF APPLIED PHYSICS, 1963, 34 (03) :656-&

[9] KINETIC EFFECTS IN COERCIVITY MEASUREMENTS [J].

SHARROCK, MP ;

MCKINNEY, JT .

IEEE TRANSACTIONS ON MAGNETICS, 1981, 17 (06) :3020-3022

[10] DC MODULATION NOISE AND DEMAGNETIZING FIELDS IN THIN METALLIC MEDIA [J].

TARNOPOLSKY, GJ ;

TRAN, LT ;

BARANY, AM ;

BERTRAM, HN ;

BLOOMQUIST, DR .

IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (04) :3160-3165

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