CoNbTi as high resistivity SAL material for high-density MR
AssigneeRead-Rite Corporation
InventorsNader Mahvan, Sukesh Mahajan, Raman Basi
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Abstract
A soft adjacent layer made from a ternary alloy material and a MR sensor utilizing this soft adjacent layer. The ternary alloy material CoXY includes cobalt (Co), a first transition metal X and a second transition metal Y. In a preferred embodiment, X is niobium (Nb) and Y is titanium (Ti) so that the resulting ternary alloy material is CoNbTi. Alternatively, X and Y may be any transition metals such that the resulting ternary alloy material CoXY exhibits properties similar to CoNbTi. The high-density MR sensor of the present invention includes a SAL made from the ternary alloy material, a MR layer and a non-magnetic spacer sandwiched between the SAL and MR layer.
Claims6
A magneto-resistive sensor, comprising:
- a magneto-resistive layer;
- a soft adjacent layer including a CoNbTi ternary alloy material having
- between about 80 and 90 percent by atomic weight of cobalt,
- between about 5 and 10 percent by atomic weight of niobium, and
- between about 5 and 10 percent by atomic weight of titanium;
- and
- a non-magnetic spacer layer disposed between the soft adjacent layer and the magneto-resistive layer.
Dependencies are inferred from the claim text.