(19)
(11) EP 0 522 982 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.05.1993 Bulletin 1993/19

(43) Date of publication A2:
13.01.1993 Bulletin 1993/02

(21) Application number: 92420217.9

(22) Date of filing: 25.06.1992
(51) International Patent Classification (IPC)5: H01F 10/14, H01F 41/18, H01F 41/22
// G11B5/31
(84) Designated Contracting States:
DE FR GB NL

(30) Priority: 01.07.1991 US 724068

(71) Applicant: EASTMAN KODAK COMPANY
Rochester, New York 14650-2201 (US)

(72) Inventor:
  • Zeltser, Alexander, c/o EASTMAN KODAK COMPANY
    Rochester New York 14650-2201 (US)

(74) Representative: Parent, Yves et al
Kodak-Pathé Département Brevets et Licences Centre de Recherches et de Technologie Zone Industrielle
71102 Chalon-sur-Saône Cédex
71102 Chalon-sur-Saône Cédex (FR)


(56) References cited: : 
   
       


    (54) An FeGaSi-based magnetic material with Ir as an additive


    (57) A magnetic material comprised of FeIrGaSi, containing Ir at a concentration of 1.0 to 4.0 atomic percent, has improved high-frequency permeability and wear resistance and an elevated Curie temperature. Furthermore, FeIrGaSi has a uniaxial anistropy property of several Oersteds induced by magnetic annealing of sputtered FeIrGaSi in thin film form at temperatures between 350 and 600°C.





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