DC-ERASED EDGE-NOISE SIMULATIONS IN THIN-FILM MEDIA

被引：4

作者：

BEARDSLEY, IA ^{[1
]}

ZHU, JG ^{[1
]}

机构：

[1] UNIV CALIF SAN DIEGO,CTR MAGNET RECORDING RES,LA JOLLA,CA 92093

来源：

JOURNAL OF APPLIED PHYSICS | 1990年 / 67卷 / 09期

关键词：

D O I：

10.1063/1.346062

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Edge noise in thin-film magnetic recording media is modeled using a planar array of hexagonal grains with long-range magnetostatic interactions as well as possible nearest-neighbor exchange interactions. The Landau-Lifschitz equations of motion with infinite damping are used to find the magnetization configurations. dc-erased track edges were simulated in a standstill manner using a gap centerline approximation to a realistic three-dimensional head field. The intergranular exchange coupling was varied keeping the medium parameter Mr/Hc constant. Magnetization patterns and modeled Fresnel images demonstrate the effects of exchange coupling on the ripple and vortex structures in the presence of the edge-field gradient. The fluctuation of the downtrack magnetization is a maximum at the edge of the track, where the local average of the magnetization itself is near zero.

引用

页码：5352 / 5354

页数：3

共 5 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] RECORDING HEAD SIDE READ-WRITE EFFECTS [J].

HUGHES, GF ;

BLOOMBERG, DS .

IEEE TRANSACTIONS ON MAGNETICS, 1977, 13 (05) :1457-1459

[3] SPATIAL STRUCTURE OF MEDIA NOISE IN FILM DISKS [J].

YARMCHUK, EJ .

IEEE TRANSACTIONS ON MAGNETICS, 1986, 22 (05) :877-882

[4] MICROMAGNETIC STUDIES OF THIN METALLIC-FILMS [J].

ZHU, JG ;

BERTRAM, HN .

JOURNAL OF APPLIED PHYSICS, 1988, 63 (08) :3248-3253

[5] RECORDING AND TRANSITION NOISE SIMULATIONS IN THIN-FILM MEDIA [J].

ZHU, JG ;

BERTRAM, HN .

IEEE TRANSACTIONS ON MAGNETICS, 1988, 24 (06) :2706-2708

← 1 →