Abstract:
PURPOSE: A side coating method for a non-uniform spin momentum transfer magnetic tunnel junction current flow is provided to improve current flow through spacer materials on sidewalls by the electric conductivity between a stud and spacer materials. CONSTITUTION: A seed layer(104) is formed on an underlying patterned wiring layer(102). An anti- ferroelectric material layer(106) is formed on the seed layer. A reference layer(108) is formed on the anti- ferroelectric material layer. A magnetic tunnel junction barrier(110) is formed on the reference layer. A free layer(112) is formed on the magnetic tunnel junction barrier.
Abstract:
PROBLEM TO BE SOLVED: To provide a phase change memory element connected to the edge part of a thin film electrode, and to provide a method of manufacturing the same. SOLUTION: A phase change memory (PCM) cell structure includes a first electrode 60E, a phase change element 70E, and a second electrode 80E, wherein the phase change element 70E is inserted between the first electrode 60E and the second electrode 80E, and only an edge part 75 of the first electrode 60E is contacted with the phase change element 70E, thereby reducing a contact area between the phase change element 70E and the first electrode 60E to increase a current density flowing through the phase change element 70E and effectively cause a phase change by a first programming power by a comparatively small current. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a magnetic tunnel junction device increased in a relative amount of current along an edge part of a device, and to provide a method for manufacturing the same. SOLUTION: In this magnetic tunnel junction device, a magnetic tunnel junction (MTJ) stack is formed over a patterning wiring layer 402. A low-conductivity layer 416 and a conductive hard mask 418 are formed thereon. A spacer material 420 including electrical conductivity different from that of the low-conductivity layer 416 is deposited. The spacer material 420 is etched so that the spacer material remains only on sidewalls of the hard mask 418 and a stud. A etching process is executed to leave the sidewall-spacer material 416 as a conductive link between a free magnetic layer 412 and the conductive hard mask 418, around the low-conductivity layer 416. A difference in electrical conductivity between the stud and the spacer material 420 enhances current flowing along the edges of the free layer 412 and through the spacer material 420 formed on the sidewalls. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
Ein Verfahren zum Ausbilden einer Tunnelübergangs- oder TJ-Schaltung, wobei das Verfahren ein Ausbilden einer unteren Verdrahtungsschicht (308); ein Ausbilden einer Vielzahl von TJs (301), die die untere Verdrahtungsschicht kontaktieren; ein Ausbilden einer Vielzahl von Tunnelübergangs-Durchkontaktierungen oder TJVs (305) gleichzeitig mit der Ausbildung der Vielzahl von TJs, wobei die TJVs die untere Verdrahtungsschicht kontaktieren; und ein Ausbilden einer oberen Verdrahtungsschicht (310) umfasst, die die Vielzahl von TJs und die Vielzahl von TJVs kontaktiert. Eine Schaltung, die eine Vielzahl von Tunnelübergängen umfasst, weist eine untere Verdrahtungsschicht auf, die die Vielzahl von TJs kontaktiert, wobei die untere Verdrahtungsschicht des Weiteren eine Vielzahl von Tunnelübergangs-Durchkontaktierungen kontaktiert, wobei die Vielzahl von TJs und die Vielzahl von TJVs dasselbe Material umfassen; und eine obere Verdrahtungsschicht, die die Vielzahl von TJs und die Vielzahl von TJVs kontaktiert.
Abstract:
A method for forming a tunnel junction, or TJ, circuit, the method includes forming a bottom wiring layer (308); forming a plurality of TJs (301) contacting the bottom wiring layer; forming a plurality of tunnel junction vias, or TJVs (305), simultaneously with the formation of the plurality of TJs, the TJVs contacting the bottom wiring layer; and forming a top wiring layer (310) contacting the plurality of TJs and the plurality of TJVs. A circuit comprising a plurality of tunnel junctions includes a bottom wiring layer contacting the plurality of TJs, the bottom wiring layer further contacting a plurality of tunnel junction vias, wherein the plurality of TJs and the plurality of TJVs comprise the same material; and a top wiring layer contacting the plurality of TJs and the plurality of TJVs.