LOCAL MAGNETORESISTIVE RESPONSE IN THIN-FILM NI-FE READ ELEMENTS - A SUB-MICROMETER-RESOLUTION MEASUREMENT SYSTEM

被引：8

作者：

CROSS, RW ^{[1
]}

KOS, AB ^{[1
]}

THOMPSON, CA ^{[1
]}

PETERSEN, TW ^{[1
]}

机构：

[1] HEWLETT PACKARD CO,DEPT THIN FILM,PALO ALTO,CA 94304

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1992年 / 28卷 / 05期

关键词：

Barkhausen noise - Four-probe resistance measurement - Magnetic read heads - Magnetoresistive response - Thin-film read elements;

D O I：

10.1109/20.179716

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：

Bulk and local magnetoresistive responses in Ni-Fe thin films were measured as a function of applied magnetic field and field angle. The measurements were made using a four-probe resistance measurement system, which consisted of two scanning micro-probes for voltage taps, each less than 1-mu-m in tip diameter. The scanning resolution of the micro-probes was 0.5-mu-m. The system was used to determine domain formation and motion in magnetoresistive read heads. Longitudinal fields, produced by demagnetizing or external field components, may cause domain formation and subsequent domain-wall motion (and annihilation). This leads to Barkhausen noise, which is detrimental to the performance of the device as a magnetic read head. Experimental results for both the bulk and local responses were in qualitative agreement with micromagnetic theory.

引用

页码：3060 / 3065

页数：6

共 12 条

[1] EFFECT OF SENSE CURRENT ON BARKHAUSEN NOISE IN MAGNETORESISTIVE RECORDING-HEADS
BRUG, JA
ANTHONY, TC
GILL, HS
[J]. JOURNAL OF APPLIED PHYSICS, 1990, 67 (09) : 4851 - 4853
[2] Properties of the surface magnetization in ferromagnetic crystals
Elmore, WC
[J]. PHYSICAL REVIEW, 1937, 51 (11): : 0982 - 0988
[3] MAGNETIC DOMAINS BY THE LONGITUDINAL KERR EFFECT
FOWLER, CA
FRYER, EM
[J]. PHYSICAL REVIEW, 1954, 94 (01): : 52 - 56
[4] MAGNETORESISTIVE READOUT TRANSDUCER
HUNT, RP
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1971, MAG7 (01) : 150 - &
[5] JAN JP, 1957, SOLID STATE PHYS, V5, P15
[6] MCGUIRE TR, 1969, MAGNETISM METALLURGY, V1, P147
[7] MONSON JE, 1987, MAGNETIC RECORDING, V1, P390
[8] A SPECIFIC MODEL FOR DOMAIN-WALL NUCLEATION IN THIN-FILM PERMALLOY MICROELEMENTS
SMITH, N
[J]. JOURNAL OF APPLIED PHYSICS, 1988, 63 (08) : 2932 - 2937
[9] MAGNETICS OF SMALL MAGNETORESISTIVE SENSORS
TSANG, C
[J]. JOURNAL OF APPLIED PHYSICS, 1984, 55 (06) : 2226 - 2231
[10] STUDY OF DOMAIN FORMATION IN SMALL PERMALLOY MAGNETORESISTIVE ELEMENTS
TSANG, C
DECKER, SK
[J]. JOURNAL OF APPLIED PHYSICS, 1982, 53 (03) : 2602 - 2604

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