Sealing glass for magnetic head, magnetic head, and magnetic recording/reproducing device
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United States of America Patent
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Mar 14, 2006
Grant Date -
Jan 22, 2004
app pub date -
Mar 5, 2002
filing date -
Mar 8, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A magnetic head for a magnetic recording/reproducing device to conform to high-density recording, wherein a metal magnetic film with a high saturation flux density is employed and the mechanical strength of the sealing glass for magnetic heads, is improved thereby achieving a high reliability, high performance magnetic head. Also, this is provided a magnetic recording/reproducing device utilizing the magnetic head. Sealing glass for magnetic heads comprising, by oxide conversion, 17.2 to 25 wt % of SiO2, 1 to 10 wt % of B2O3, 58 to 75 wt % of PbO, 0.2 to 7 wt % of at least one of Al2O3 and ZnO, and 0.2 to 5 wt % of at least one of Na2O and K2O, and a magnetic head and magnetic recording/reproducing device which utilize the sealing glass.
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