MAGNETIC FILAMENT MEMORY

To provide a magnetic filament memory in which a magnetic domain of a fixed length can be continuously formed.SOLUTION: A magnetic filament memory 1 comprises a magnetic filament 2 in a thin film shape and a recording element 4 disposed across the magnetic filament 2 in a film thickness direction of the magnetic filament 2. The magnetic filament 2 includes a magnetic domain formation region 30 which is adjacent to a crossing region 20 crossing the recording element 4 and in which information is written by a current flowing to the recording element 4, and includes a recording region 40 adjacent to the magnetic domain formation region 30. A first narrowed part 11 which is recessed in a width direction of the magnetic filament is provided in a boundary between the magnetic domain formation region 30 and the recording region 40, and a second narrowed part 11 which is recessed in the width direction of the magnetic filament is provided in a boundary between the magnetic domain formation region 30 and the crossing region 20. The first narrowed part 11 has a first shape which is formed so as to reduce a width in a first direction from the magnetic domain formation region 30 to the recording region 40, and the second narrowed part 12 has a second shape which is formed so as to reduce a width in a second direction which is reverse to the first direction.SELECTED DRAWING: Figure 1A 【課題】一定長の磁区を連続的に形成することができる磁性細線メモリを提供する。【解決手段】磁性細線メモリ１は、薄膜状の磁性細線２と、磁性細線２の膜厚方向に磁性細線２と交差するように配設された記録素子４と、を備え、磁性細線２は、記録素子４と交差する交差領域２０に隣接して、記録素子４に流れる電流によって情報が書き込まれる磁区形成領域３０を備えると共に、磁区形成領域３０に隣接して記録領域４０を備え、磁区形成領域３０と記録領域４０との境界に、磁性細線の幅方向に凹んだ第１括れ部１１を有し、磁区形成領域３０と交差領域２０との境界に、磁性細線の幅方向に凹んだ第２括れ部１１を有し、第１括れ部１１は、磁区形成領域３０から記録領域４０に向かう第１方向に向かって幅が狭くなるように形成された第１形状であり、第２括れ部１２は、第１方向とは逆向きの第２方向に向かって幅が狭くなるように形成された第２形状である。【選択図】図１Ａ