MATERIAL FOR MAGNETIC HEAD

PURPOSE:To improve the magnetic permeability in a high frequency region by alternately laminating Mn and Co layers each having <=100Angstrom thickness. CONSTITUTION:An alternately laminated Mn-Co film 2 is formed on a first substrate 1 by vapor deposition. Since the film 2 is formed by alternatel...

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Bibliographic Details
Main Authors SAJI HARUO, OKITA KAZUHIKO, HORIKAWA JUNICHI, HOSHI TOSHIHARU
Format Patent
LanguageEnglish
Published 19.09.1988
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
MAGNETS
PHYSICS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Summary:PURPOSE:To improve the magnetic permeability in a high frequency region by alternately laminating Mn and Co layers each having <=100Angstrom thickness. CONSTITUTION:An alternately laminated Mn-Co film 2 is formed on a first substrate 1 by vapor deposition. Since the film 2 is formed by alternately laminating 6,000 layers in total of Mn layers each having 20Angstrom thickness and Co layers each having 30Angstrom thickness, the thickness of the film 2 attains to 30mum. A second substrate 3 made of the same material as the first substrate 1 is stuck to the film 2 to obtain a core having the film 2 held between the substrates 1, 3. Since the Mn and Co layers each having <=100Angstrom thickness are alternately laminated, the intrasurface magnetic anisotropy is extremely increased and the rotation of saturation magnetization in the layers is facilitated, so the magnetic permeability in a high frequency region is remarkably improved.
Bibliography:Application Number: JP19870059415