Fe-Ni-Mo magnet alloys and devices
AssigneeAT&T Bell Laboratories
InventorsSungho Jin, Thomas H. Tiefel
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Abstract
Essentially cobalt-free alloys are disclosed having a coercive force which is greater than or equal to 40 oersteds and having a magnetic squareness which is greater than or equal to 0.6. Such alloys comprise Fe, Ni, and Mo, and their approximate compositions are specified by 16-30 weight percent Ni and 3-10 weight percent Mo, remainder essentially Fe. Disclosed alloys are useful in memory and security devices.
Claims9
Device comprising a body of a magnetic alloy having a coercive force which is greater than or equal to 40 oersteds and a magnetic squareness which is greater than or equal to 0.6,
- said device being characterized in that
- said alloy comprises Fe, Ni, and Mo in a combined amount which is greater than or equal to 95 weight percent of said body,
- Ni content of said alloy being in the range of 16-30 weight percent of said combined amount,
- Mo content of said alloy in the range of from 3-10 weight percent of said combined amount, and
- each of the elements Si, Al, Cu, V, Ti, Nb, Zr, Ta, Hf, and W being present in said alloy in an amount which is less than 0.5 weight percent of said combined amount.
Magnetic alloy having a coercive force which is greater than or equal 40 oersteds and a magnetic squareness which is greater than or equal to 0.6, said alloy being characterized in that said alloy comprises Fe, Ni, and Mo in a combined amount which is greater than or equal to 95 weight percent of said body, Ni content of said alloy being in the range of 16-30 weight percent of said combined amount, and Mo content of said alloy being in the range of from 3-10 weight percent of said combined amount, and each of the elements Si, Al, Cu, V, Ti, Nb, Zr, Ta, Hf, and W being present in said alloy in an amount which in less than 0.5 weight percent of said combined amount.
Dependencies are inferred from the claim text.