Patent ID: 6597049
Filing Date: 2003-07-22
Classification: G11C,H01L

Abstract:
A conductor structure for a magnetic memory device including a magnetic field sensitive memory cell including a width, a length, and a data layer for storing a bit of data as an alterable orientation of magnetization, comprising:a first conductor crossing the memory cell in a width direction and operative to generate a first magnetic field in response to a first current flowing therein, the first conductor including a first width and a first thickness defining a first cross-sectional area, a top surface, two side surfaces positioned within the width of the memory cell, and a bottom surface positioned adjacent to the memory cell; a second conductor crossing the memory cell in a length direction and operative to generate a second magnetic field in response to a second current flowing therein, the second conductor including a second width and a second thickness defining a second cross-sectional area, a top surface, two side surfaces, and a bottom surface positioned adjacent to the memory cell, and wherein the second width is substantially greater than or equal to the length of the memory cell, the first and second magnetic fields cooperatively interact with the data layer to rotate the alterable orientation of magnetization, and wherein the first thickness and the first width are preselected to decrease the first cross-sectional area and to increase a current density in the first conductor so that a magnitude of the first magnetic field sufficient to rotate the alterable orientation of magnetization in cooperation with the second magnetic field is generated by a reduced magnitude of the first current.