Patent ID: 7319262
Filing Date: 2008-01-15
Classification: B82Y,G11C,H01L

Abstract:
1. An apparatus, comprising: a first pillar located over a substrate and having at least one sloped surface oriented at a first acute angle relative to the substrate; a second pillar located over the substrate and having at least one sloped surface oriented at a second acute angle relative to the substrate; a first MRAM stack having a first magnetic layer substantially conforming to the sloped surface of the first pillar, a first dielectric layer substantially conforming to the first magnetic layer, and a second magnetic layer substantially conforming to the first dielectric layer, whereby each of the layers of the first MRAM stack is oriented at the first acute angle relative to the substrate; and a second MRAM stack having a third magnetic layer substantially conforming to the sloped surface of the second pillar, a second dielectric layer substantially conforming to the third magnetic layer, and a fourth magnetic layer substantially conforming to the second dielectric layer, whereby each of the layers of the second MRAM stack is oriented at the second acute angle relative to the substrate; wherein the first and second MRAM stacks, collectively, are located between the sloped surface of the first pillar and the sloped surface of the second pillar.