Patent ID: 9570670
Date: 2017-02-14
CPC Classifications: G11C,H01L

Claim:
1. A magnetic device, comprising: a lower electrode; a magnetic tunnel junction including a lower magnetic structure, a tunnel barrier, and an upper magnetic structure that are sequentially stacked in a first direction on the top surface of the lower electrode, wherein the tunnel barrier comprises a width that is greater than a width of the lower magnetic structure in a second direction that is substantially perpendicular to the first direction, wherein the tunnel barrier comprises a substantially quadrilateral cross section, and wherein a width of the lower electrode in the second direction is substantially smaller than a width of the lower magnetic structure in the second direction; an upper electrode stacked in the first direction on the upper magnetic structure; a capping layer conformally covering the magnetic tunnel junction and comprising single layer, the capping layer including a first portion extending in the first direction and a second portion extending in the second direction; and a mold layer disposed between a sidewall of the lower magnetic structure and the first portion of the capping layer, wherein a width of the upper electrode is smaller than the width of the lower magnetic structure in the second direction, wherein the lower electrode is electrically connected between the lower magnetic structure and a selection element, wherein the upper magnetic structure is electrically connected further away from the selection element than the lower magnetic structure, wherein the first portion of the capping layer is in direct contact with a sidewall of the tunnel barrier and a sidewall of the upper magnetic structure, and wherein the first portion of the capping layer is in directly contact with a sidewall of the mold layer.