Patent ID: 9728583
Date: 2017-08-08
CPC Classifications: G11C,H01L

Claim:
1. A magnetoresistive device, comprising: a bottom electrode; a magnetoresistive stack over the bottom electrode; a top electrode over the magnetoresistive stack; a layer of silicon nitride on (i) a portion of the bottom electrode not under the magnetoresistive stack and (ii) sidewalls of at least a portion of the magnetoresistive stack; a layer of silicon dioxide on the layer of silicon nitride; a first via extending through a portion of the layer of silicon dioxide, wherein the first via includes electrically conductive material and physically contacts a portion of the top electrode such that the first via is electrically coupled to the top electrode, wherein the first via extends below a top surface of the top electrode, and wherein a first portion of the layer of silicon nitride is between the first via and a sidewall of the magnetoresistive stack such that the first via is electrically isolated from the magnetoresistive stack; and a second via under the bottom electrode, wherein the bottom electrode is electrically connected to the second via, wherein the second via is directly under the magnetoresistive stack.