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1. (WO1997016823) MAGNETIC HEAD HAVING A LAMINATED FLUX GUIDE, AND DEVICE PROVIDED WITH THE MAGNETIC HEAD
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016823 International Application No.: PCT/IB1996/001133
Publication Date: 09.05.1997 International Filing Date: 22.10.1996
IPC:
G11B 5/31 (2006.01) ,G11B 5/39 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127
Structure or manufacture of heads, e.g. inductive
31
using thin film
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127
Structure or manufacture of heads, e.g. inductive
33
Structure or manufacture of flux-sensitive heads
39
using magneto-resistive devices
Applicants:
PHILIPS ELECTRONICS N.V. [NL/NL]; Groenewoudseweg 1 NL-5621 BA Eindhoven, NL
PHILIPS NORDEN AB [SE/SE]; Kottbygatan 7 Kista S-164 85 Stockholm, SE (SE)
Inventors:
FOLKERTS, Wiepke; NL
POSTMA, Lambertus; NL
Agent:
SCHRIJNEMAEKERS, Hubert, J., M.; Internationaal Octrooibureau B.V. P.O. Box 220 NL-5600 AE Eindhoven, NL
Priority Data:
95202923.930.10.1995EP
Title (EN) MAGNETIC HEAD HAVING A LAMINATED FLUX GUIDE, AND DEVICE PROVIDED WITH THE MAGNETIC HEAD
(FR) TETE MAGNETIQUE COMPORTANT UN GUIDE A FLUX LAMINAIRE ET DISPOSITIF POURVU D'UNE TETE MAGNETIQUE
Abstract:
(EN) Magnetic head having a head face (5) and comprising a magnetic yoke which is provided with an MR sensor (11) having an easy axis of magnetization (M1), and a flux guide (7; 9). To optimally inhibit the occurrence of domain walls, the flux guide comprises a pair of exchange-coupled layers, a first layer of which is a soft-magnetic layer (17) and a second layer is an anti-ferromagnetic or ferrimagnetic layer (19).
(FR) Tête magnétique comportant une face (5) et comprenant une culasse magnétique qui est pourvue d'un détecteur magnétorésistif (11) présentant un axe simple de magnétisation (M1) et un guide de flux (7; 9). Pour inhiber de manière optimale phénomène de murs de domaines, le guide de flux comprend une paire de couches à couplage d'échange, la première couche étant une couche en matière magnétique douce (17) et la seconde couche, une couche en matière anti-ferromagnétique ou ferrimagnétique (19).
Designated States: CN, JP, SG
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)