Dynamic magnetic information storage or retrieval – Head – Core
Patent
1991-04-19
1993-05-11
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Head
Core
G11B 5235
Patent
active
052106683
ABSTRACT:
Magnetic head comprising a magnetic core having two core limbs (1,3) formed from a ferrite, which core limbs constitute two core faces located opposite each other, at least one of said core faces having a cladding of a soft-magnetic material having a higher saturation magnetisation than the ferrite, and a non-magnetic transducing gap (11) present between the core faces and having at least one layer of a first metallic material (21) and bonded layers (23) of a second metallic material. The cladding comprises a first cladding layer (15) of an alloy based on Ni-Fe on which a second cladding layer (17) of an amorphous alloy based on Co-Ti and/or Zr and/or Hf-Nb and/or Ta is provided, while the first metallic material, chosen from the group of Mo, Ti, Cr and NiCr, is directly provided on the amorphous alloy of the cladding. (FIG. 2).
REFERENCES:
patent: 4780779 (1988-10-01), Pisharody et al.
patent: 4887177 (1989-12-01), Sillen
patent: 5001589 (1991-03-01), Rask et al.
patent: 5001590 (1991-03-01), Saito et al.
Binder-Krieglstein Wolfgang
Dirne Franciscus W. A.
Ruigrok Jacobus J. M.
Sillen Cornelis W. M. P.
Traxlmayr Ulrich
Spain Norman N.
Tupper Robert S.
U.S. Philips Corporation
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