Patent ID: 8334149

Claim:
A method for fabricating a first substrate for use in a multi-chip module (MCM), comprising: fabricating first negative features on a first surface of the first substrate, wherein a given first negative feature is recessed below the first surface; depositing a seed layer in at least some of the first negative features; and depositing a first magnetic material on the seed layer in the at least some of the first negative features, wherein the seed layer defines an orientation of a magnetic axis of the first magnetic material; wherein the first substrate is configured to mechanically couple to a second surface of a second substrate in the MCM, wherein the second surface includes: positive features that protrude above the second surface and are configured to mate with a first subset of the first negative features, and second negative features recessed below the second surface and associated with a second subset of the first negative features to define pairs of negative features; and wherein the mechanical coupling is facilitated by the first magnetic material.