FR2149397B1 - - Google Patents

Info

Publication number
FR2149397B1
FR2149397B1 FR7228833A FR7228833A FR2149397B1 FR 2149397 B1 FR2149397 B1 FR 2149397B1 FR 7228833 A FR7228833 A FR 7228833A FR 7228833 A FR7228833 A FR 7228833A FR 2149397 B1 FR2149397 B1 FR 2149397B1
Authority
FR
France
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.)
Expired
Application number
FR7228833A
Other versions
FR2149397A1 (en
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2149397A1 publication Critical patent/FR2149397A1/fr
Application granted granted Critical
Publication of FR2149397B1 publication Critical patent/FR2149397B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • 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
    • G11B5/23—Gap features
    • G11B5/235—Selection of material for gap filler

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Compositions (AREA)
FR7228833A 1971-08-18 1972-07-26 Glass compatible with nickel zinc ferrites for magnetic heads - - based on silica and boria Granted FR2149397A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17291071A 1971-08-18 1971-08-18

Publications (2)

Publication Number Publication Date
FR2149397A1 FR2149397A1 (en) 1973-03-30
FR2149397B1 true FR2149397B1 (fr) 1974-07-12

Family

ID=22629705

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7228833A Granted FR2149397A1 (en) 1971-08-18 1972-07-26 Glass compatible with nickel zinc ferrites for magnetic heads - - based on silica and boria

Country Status (5)

Country Link
JP (1) JPS4829810A (fr)
CA (1) CA961056A (fr)
DE (1) DE2240062A1 (fr)
FR (1) FR2149397A1 (fr)
IT (1) IT959915B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111517775B (zh) * 2020-04-01 2021-12-14 深圳顺络电子股份有限公司 一种耐热冲击NiZn铁氧体材料及其制备方法

Also Published As

Publication number Publication date
IT959915B (it) 1973-11-10
DE2240062A1 (de) 1973-02-22
JPS4829810A (fr) 1973-04-20
CA961056A (en) 1975-01-14
FR2149397A1 (en) 1973-03-30

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Legal Events

Date Code Title Description
ST Notification of lapse