Ferrromagnetic thin film and magnetic head using it

Details Ferrromagnetic thin film and magnetic head using it Ferrromagnetic thin film and magnetic head using it

1987-02-19

1990-01-02

Zimmerman, John J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428692, 428928, G11B 5127

Patent

active

048912786

ABSTRACT:
A ferromagnetic thin film containing Fe as a main component and at least one additive element selected from the group consisting of Co, Ni, Ru, Rh, Pd, Os, Ir and Pt, in which the total content of the at least one additive element is not less than 0.1 at % and additive contents, a, b, c, d, e, f, g and h (at %) respectively of said Co, Ni, Ru, Rh, Pd, Os, Ir and Pt satisfy ##EQU1## The ferromagnetic thin film thus disclosed has a high saturation flux density of 18 KG or more, a magnetostriction constant close to zero, and excellent corrosion resistance. There is also disclosed a magnetic head using the above described ferromagnetic thin film in at least a part of a magnetic circuit thereof.

REFERENCES:
patent: 3375091 (1968-03-01), Feldtkeller
patent: 4103315 (1978-07-01), Hempstead et al.
patent: 4610935 (1986-09-01), Kumasaka
Zeitschrift fur Angewandte Physik, vol. 26, No. 2, Feb. 1969, pp. 141-145, H. Hoffman et al, "Die Abhangigkeit der Sattigungsmagnetostriktion von der Legierungszusammensetzung ferromagnetischer Aufdampfschichten".
Landolt-Bornstein: "Zahlenwerk und Funktionen aus Physik, Chemie, Astromonie, Geophysik und Technik", 6th ed., Eigenschaften der Materie in ihren Aggregatzustanden, part 9, `Magnetische Eigenschaften`, 1962, pp. 1-129-1-133.
Dorleijn, J. W. F., Electrical Conduction in Ferromagnetic Metals, Chemical Abstracts Abstract No. 87:14647z, 1976.
V. E. Rode et al., Magnetic Properties of Iron Alloys with Nickel and Ruthenium, Chemical Abstracts Abstract No. 95:179826k, 1981.
High Strength Electrolytic Iron Foil, Chemical Abstracts Abstract No. 100:14509t, 1983.

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