JPS57152510A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS57152510A
JPS57152510A JP3997181A JP3997181A JPS57152510A JP S57152510 A JPS57152510 A JP S57152510A JP 3997181 A JP3997181 A JP 3997181A JP 3997181 A JP3997181 A JP 3997181A JP S57152510 A JPS57152510 A JP S57152510A
Authority
JP
Japan
Prior art keywords
wear
magnetic
layer
resisting layer
flux density
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3997181A
Other languages
Japanese (ja)
Inventor
Takeshi Hirota
Eiichi Hirota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3997181A priority Critical patent/JPS57152510A/en
Publication of JPS57152510A publication Critical patent/JPS57152510A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To improve magnetic flux density and wear resistance by laminating a magnetic and a wear-resisting layer, having a specific film thickness range, by turns. CONSTITUTION:A head core 1 is formed by alternately laminating a magnetic layer 2 and a wear-resisting layer 3 having a 0.3-3mum thickness. When the magnetic layer 2 and wear-resisting layer 3 are used in combination, the magnetic layer 2 uses a metallic magnetic material practically, and the wear-resisting layer 3 uses ferrite. For the practical film thicknesses of those two kinds of thin films, they are so determined that (Bs1.t1+Bs2.2)/(t1+t2)>=6,000 (G), where Bs1 (G) is the saturated magnetic flux density of the metallic magnetic material of the magnetic layer, and t1(mum) is the film thickness; Bs2(G) is the saturated magnetic flux density of the wear-resisting layer and t2(mum) is the film thickness.
JP3997181A 1981-03-18 1981-03-18 Magnetic head Pending JPS57152510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3997181A JPS57152510A (en) 1981-03-18 1981-03-18 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3997181A JPS57152510A (en) 1981-03-18 1981-03-18 Magnetic head

Publications (1)

Publication Number Publication Date
JPS57152510A true JPS57152510A (en) 1982-09-20

Family

ID=12567835

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3997181A Pending JPS57152510A (en) 1981-03-18 1981-03-18 Magnetic head

Country Status (1)

Country Link
JP (1) JPS57152510A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60201509A (en) * 1984-03-23 1985-10-12 Matsushita Electric Ind Co Ltd Manufacture of magnetic head
US4769729A (en) * 1985-06-14 1988-09-06 Hitachi, Ltd. Magnetic head having ferromagnetic amorphous alloy multi-layered film
JPH03154207A (en) * 1989-11-13 1991-07-02 Nec Gumma Ltd Magnetic core

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60201509A (en) * 1984-03-23 1985-10-12 Matsushita Electric Ind Co Ltd Manufacture of magnetic head
US4769729A (en) * 1985-06-14 1988-09-06 Hitachi, Ltd. Magnetic head having ferromagnetic amorphous alloy multi-layered film
JPH03154207A (en) * 1989-11-13 1991-07-02 Nec Gumma Ltd Magnetic core

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