Magnetic memory device

Abstract

This invention provides a magnetic memory device capable of accurately electrically separating adjacent magnetoresistive elements. The magnetic memory device of one embodiment includes: a lower structure; a first stacked structure disposed on the lower structure; a second stacked structure disposed on the lower structure and adjacent to the first stacked structure; a first boron-containing layer disposed on the side of the first stacked structure and containing boron (B); and a second boron-containing layer disposed on the side of the second stacked structure and containing boron (B); and the first and second stacked structures each include: a base portion comprising a first magnetic layer having a variable magnetization direction, a second magnetic layer having a fixed magnetization direction, and a non-magnetic layer disposed between the first magnetic layer and the second magnetic layer; a lower portion disposed on the lower layer side of the base portion and having conductivity; and an upper portion disposed on the upper layer side of the base portion and having conductivity.

Images