AC-driven AMR and GMR magnetoresistors

被引：56

作者：

Ripka, P

Tondra, M

Stokes, J

Beech, R

机构：

[1] Czech Tech Univ, Dept Measurement, Fac Elect Engn, Prague 16627 6, Czech Republic

[2] Nonvolatile Elect, Eden Prairie, MN 55344 USA

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 1999年 / 76卷 / 1-3期

关键词：

magnetic sensors; magnetoresistors; GMR; AMR;

D O I：

10.1016/S0924-4247(99)00034-5

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：

Anisotropic and giant magnetoresistive (AMR and GMR, respectively) sensors are attractive for industrial applications, as they are more sensitive and stable than Hall sensors. Their performance can be improved by AC excitation: flipping for AMR and AC biasing for GMR. AC excitation lowers the hysteresis, reduces the offset and, in some cases, also decreases sensor noise. The sensitivity to perpendicular fields is reduced in case of AMR sensors. AC-driven magnetoresistors are competitive with miniature fluxgate sensors and they are suitable for precise applications such as compasses. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

收藏

页码：225 / 230

页数：6

相关论文

共 15 条

[1] GIANT MAGNETORESISTANCE OF (001)FE/(001) CR MAGNETIC SUPERLATTICES [J].

BAIBICH, MN ;

BROTO, JM ;

FERT, A ;

VANDAU, FN ;

PETROFF, F ;

EITENNE, P ;

CREUZET, G ;

FRIEDERICH, A ;

CHAZELAS, J .

PHYSICAL REVIEW LETTERS, 1988, 61 (21) :2472-2475

[2] MAGNETIC AND TRANSPORT-PROPERTIES OF FE/CR SUPERLATTICES (INVITED) [J].

BARTHELEMY, A ;

FERT, A ;

BAIBICH, MN ;

HADJOUDJ, S ;

PETROFF, F ;

ETIENNE, P ;

CABANEL, R ;

LEQUIEN, S ;

VANDAU, FN ;

CREUZET, G .

JOURNAL OF APPLIED PHYSICS, 1990, 67 (09) :5908-5913

[3] ENHANCED MAGNETORESISTANCE IN LAYERED MAGNETIC-STRUCTURES WITH ANTIFERROMAGNETIC INTERLAYER EXCHANGE [J].

BINASCH, G ;

GRUNBERG, P ;

SAURENBACH, F ;

ZINN, W .

PHYSICAL REVIEW B, 1989, 39 (07) :4828-4830

[4] GIANT MAGNETORESISTANCE IN NARROW STRIPES [J].

DAUGHTON, JM ;

BADE, PA ;

JENSON, ML ;

RAHMATI, MMM .

IEEE TRANSACTIONS ON MAGNETICS, 1992, 28 (05) :2488-2493

[5] WEAKLY COUPLED GMR SANDWICHES [J].

DAUGHTON, JM .

IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (02) :364-368

[6] GIANT MAGNETORESISTANCE IN SOFT FERROMAGNETIC MULTILAYERS [J].

DIENY, B ;

SPERIOSU, VS ;

PARKIN, SSP ;

GURNEY, BA ;

WILHOIT, DR ;

MAURI, D .

PHYSICAL REVIEW B, 1991, 43 (01) :1297-1300

[7] Demodulation of a magnetoresistive sensor signal to achieve a low-cost, stable and high-resolution vector magnetometer [J].

Flynn, D .

SENSORS AND ACTUATORS A-PHYSICAL, 1995, 50 (03) :187-190

[8] LAYERED MAGNETIC-STRUCTURES - EVIDENCE FOR ANTIFERROMAGNETIC COUPLING OF FE LAYERS ACROSS CR INTERLAYERS [J].

GRUNBERG, P ;

SCHREIBER, R ;

PANG, Y ;

BRODSKY, MB ;

SOWERS, H .

PHYSICAL REVIEW LETTERS, 1986, 57 (19) :2442-2445

[9]

HEREMANS J, 1997, P 16 C PROP APPL MAG

[10] High-resolution micro-fluxgate sensing elements using closely coupled coil structures [J].

Kawahito, S ;

Satoh, H ;

Sutoh, M ;

Tadokoro, Y .

SENSORS AND ACTUATORS A-PHYSICAL, 1996, 54 (1-3) :612-617