(19)
(11) EP 0 121 046 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.11.1986 Bulletin 1986/48

(43) Date of publication A2:
10.10.1984 Bulletin 1984/41

(21) Application number: 84100955

(22) Date of filing: 31.01.1984
(84) Designated Contracting States:
DE FR GB NL

(30) Priority: 31.03.1983 JP 5376983
26.07.1983 JP 13660883

(71) Applicant: KABUSHIKI KAISHA TOSHIBA
 ()

(72) Inventors:
  • Tateishi, Hiroshi
     ()
  • Haga, Masakatsu
     ()
  • Hashimoto, Susumu
     ()

   


(54) Amorphous alloy for magnetic head and magnetic head with an amorphous alloy


(57) An amorphous alloy for a magnetic head has a composition which may be represented asorwhere T, T', X, Y and Z satisfy the conditions of 0.75 ≤T≤14, 0.2≤T'≤1.5, 6≤X≤15, 3≤Y≤8 and 0≤Z≤0.01. Such an amorphous alloy has a high crystallization temperature, said temperature being higher than 500°C, and does not lower the effective magnetic permeability, even if gradual cooling is performed after heat treatment. A magnetic head having a core consisting of such an amorphous alloy is not deteriorated in its magnetic properties, even if the head is made by glass bonding.









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