Patent ID: 8043869

Claim:
A method of fabricating a magnetic memory device, the method comprising: forming a device isolation film to confine an active region at a substrate having impurities of a first conductivity; forming a common line having impurities of a second conductivity in the active region; forming a first write-in semiconductor pattern, a readout semiconductor pattern and a second write-in semiconductor pattern, with each being disposed on the common line laterally separated from each other, and each having impurities of the first conductivity; forming a magnetic tunnel junction structure on the readout semiconductor pattern, the magnetic tunnel junction structure being electrically connected to the readout semiconductor pattern; forming first and second write-in conductors each on the first and second write-in semiconductor patterns at both lateral sides of the magnetic tunnel junction structure, such that the first and second write-in conductors are each electrically connected with the first and second write-in semiconductor patterns; forming a readout line which is electrically connected to the magnetic tunnel junction structure; foaming first and second write-in lines which are each electrically connected with the first and second write-in conductors; forming a first write-in buffering pattern between the first write-in semiconductor pattern and the common line; forming a readout buffering pattern between the readout semiconductor pattern and the common line; and forming a second write-in buffering pattern between the second write-in semiconductor pattern and the common line, wherein the readout buffering pattern, and the first and second write-in buffering patterns are semiconductors having impurities of the second conductivity, and wherein an impurity concentration of each of the readout buffering pattern, and the first and second write-in buffering patterns is lower than an impurity concentration of the common line.