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US 6,806,546 B2Granted
Passivated magneto-resistive bit structure
AssigneeMicron Technology, Inc.
InventorsHarry Liu, Lonny Berg, William L Larson, Shaoping Li, Theodore Zhu, Joel Drewes
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Abstract
A passivated magneto-resistive bit structure is disclosed in which surfaces subjects to oxidation or corrosion are protected. In one embodiment, a bit structure is encapsulated by means of an etch stop barrier material. In another embodiment an etch stop barrier material protects the top of a bit structure and dielectric spacers protect the side walls.
Claims3
A passivated magneto-resistive bit structure, comprising:
- a magneto-resistive bit having a top surface and side walls;
- a conductive etch stop barrier layer encapsulating the top surface and sidewalls side walls of said bit;
- and
- a metal contact provided upon substantially all of a top surface of said etch stop barrier layer including at least a portion of the etch stop barrier layer encapsulating the side walls of the magneto-resistive bit.
1 more element
Dependencies are inferred from the claim text.