Abstract:
PROBLEM TO BE SOLVED: To provide a magnetic random access memory for enabling reduction of a cell area and also to provide a method for manufacturing the magnetic random access memory. SOLUTION: The magnetic random access memory includes a semiconductor substrate 11 to which a stepped part having a side surface and an upper surface is formed, a gate electrode G formed on the side surface of the stepped portion via a gate insulating film 20, a drain diffusing layer 24 formed within the upper surface of the stepped portion, a source diffusing layer 18 formed separately from the drain diffusing layer within the semiconductor substrate at the lower side of the drain diffusing layer, moreover, a magnetoresistive effect element MTJ being connected to the drain diffusing layer and including a fixing layer 31 in which the magnetizing direction is fixed, a recording layer 33 in which the magnetizing direction can be inverted, and a non-magnetic layer 32 provided between the fixing layer and the recording layer in order to show parallel or anti-parallel state in the magnetizing direction of the fixing layer and the recording layer in accordance with direction of a current applied between the fixing layer and the recording layer, and a bit line BL connected to the magnetoresistive effect element. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To control the revolution direction of magnetic flux freely and with high reproducibility, with simple construction without heat process such as pinning, concerning a magnetic ring unit and a magnetic memory apparatus. SOLUTION: The magnetic ring unit is constituted of a magnetic ring 1 of an eccentric ring shape whose central point of the inner diameter is eccentric relative to the central point of the outer diameter. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a highly integrated magnetic storage device, having a higher write/read margin, which is provided with a cylindrical TMR element suitable for microminiaturization. SOLUTION: The magnetic storage device comprises a cylindrical magnetic fixed layer, a tunnel insulation film formed to cover any one of the external surface or internal surface of the cylindrical magnetic fixed layer, and a magnetic free layer, formed facing the magnetic fixed layer via the tunnel insulation film, in order to cover the surface of the tunnel insulation film, and is provided with a magnetic resistance element, where the magnetizing direction of the magnetic fixed layer is parallel to the center axis direction of the cylindrical shape. COPYRIGHT: (C)2004,JPO