Patent ID: 8592928
Filing Date: 2013-11-26
Classification: H01L

Abstract:
1. A magnetic random access memory comprising: a selection element formed on a semiconductor substrate; an interlayer dielectric film formed above the selection element; a contact layer formed in the interlayer dielectric film, and electrically connected to the selection element; a lower electrode layer made of a metal material, and electrically connected to the contact layer; a metal oxide insulating film made of an oxide of the metal material, and surrounding a side surface of the lower electrode layer; a magnetoresistive element formed on the lower electrode layer; an upper electrode layer formed on the magnetoresistive element; a sidewall insulating film formed on a side surface of the magnetoresistive element and a side surface of the upper electrode layer; and a bit line electrically connected to the upper electrode layer, wherein the side surface of the lower electrode layer is flush with an outer side surface of the sidewall insulating film.