摘要:
A nonvolatile memory device includes via holes (12) formed at cross sections where first wires (11) cross second wires (14), respectively, and current control elements (13) each including a current control layer (13b), a first electrode layer (13a) and a second electrode layer (13c) such that the current control layer (13b) is sandwiched between the first electrode layer (13a) and the second electrode layer (13c), in which resistance variable elements (15) are provided inside the via holes (12), respectively, the first electrode layer (13a) is disposed so as to cover the via hole (12), the current control layer (13b) is disposed so as to cover the first electrode layer (13a), the second electrode layer (13c) is disposed on the current control layer (13b), a wire layer (14a) of the second wire is disposed on the second electrode layer (13c), and the second wires (14) each includes the current control layer (13b), the second electrode layer (13c) and the wire layer (14a) of the second wire.
摘要:
A lower electrode layer 2, an upper electrode layer 4 formed above the lower electrode layer 2, and a metal oxide thin film layer 3 formed between the lower electrode layer 2 and the upper electrode layer 4 are provided. The metal oxide thin film layer 3 includes a first region 3a whose value of resistance increases or decreases by an electric pulse that is applied between the lower electrode layer 2 and the upper electrode layer 4 and a second region 3b arranged around the first region 3a and having a larger content of oxygen than the first region 3a, wherein the lower and upper electrode layers 2 and 4 and at least a part of the first region 3a are arranged so as to overlap as viewed from the direction of the thickness of the first region 3a.
摘要:
Memory elements (3) arranged in matrix in a memory apparatus (21), each includes a resistance variable element (1) which changes an electrical resistance value in response to an applied electrical pulse having a positive polarity or a negative polarity and maintains the changed electrical resistance value, and a current suppressing element (2) for suppressing a current flowing when the electrical pulse is applied to the resistance variable element. The current suppressing element includes a first electrode, a second electrode, and a current suppressing layer provided between the first electrode and the second electrode, and the current suppressing layer comprises SiNx (x: positive actual number).
摘要:
A variable resistance nonvolatile memory element capable of suppressing a variation in resistance values is provided. A nonvolatile memory element according to the present invention includes: a silicon substrate (11); a lower electrode layer (102) formed on the silicon substrate (11); a variable resistance layer formed on the lower electrode layer (102); an upper electrode layer (104) formed on the variable resistance layer; a second interlayer insulating layer (19) formed to directly cover at least side surfaces of the lower electrode layer (102) and the variable resistance layer; a stress buffering region layer (105) for buffering a stress on the upper electrode layer (104), the stress buffering region layer being formed to directly cover at least an upper surface and side surfaces of the upper electrode layer (104) and comprising a material having a stress smaller than a stress of an insulating layer used as the second interlayer insulating layer (19); a second contact (16) extending to the upper electrode layer (104); and a wiring pattern (18) connected to the second contact (16).
摘要:
A method of manufacturing a nonvolatile memory element includes: forming a first conductive film above a substrate; forming, above the first conductive film, a first metal oxide layer and a second metal oxide layer having different degrees of oxygen deficiency and a second conductive film; forming a second electrode by patterning the second conductive film; forming a variable resistance layer by patterning the first metal oxide layer and the second metal oxide layer; removing a side portion of the variable resistance layer in a surface parallel to a main surface of the substrate to a position that is further inward than an edge of the second electrode; and forming a first electrode by patterning the first conductive film after or during the removing.
摘要:
A resistance variable element (100) used in a through-hole cross-point structure memory device, according to the present invention, and a resistance variable memory device including the resistance variable element, includes a substrate (7) and an interlayer insulating layer (3) formed on the substrate, and have a configuration in which a through-hole (4) is formed to penetrate the interlayer insulating layer, a first resistance variable layer (2) comprising transition metal oxide is formed outside the through-hole, a second resistance variable layer (5) comprising transition metal oxide is formed inside the through-hole, the first resistance variable layer is different in resistivity from the second resistance variable layer, and the first resistance variable layer and the second resistance variable layer are in contact with each other only in an opening (20) of the through-hole which is closer to the substrate.
摘要:
A nonvolatile semiconductor memory device of the present invention includes a substrate (1), first wires (2), memory cells each including a resistance variable element (5) and a portion of a diode element (6), second wires (11) which respectively cross the first wires (2) to be perpendicular to the first wires (2) and each of which contains a remaining portion of the diode element (6), and upper wires (13) formed via an interlayer insulating layer (12), respectively, and the first wires (2) are connected to the upper wires (13) via first contacts (14), respectively, and the second wires (11) are connected to the upper wires (13) via second contacts (15), respectively.
摘要:
A nonvolatile memory device (10A) comprises an upper electrode layer (2); a lower electrode layer (4); a resistance variable layer (3) sandwiched between the upper electrode layer (2) and the lower electrode layer (4); and a charge diffusion prevention mask (1A) formed on a portion of the upper electrode layer (2); wherein the resistance variable layer (3) includes a first film comprising oxygen-deficient transition metal oxide and a second film comprising oxygen-deficient transition metal oxide which is higher in oxygen content than the first film; at least one of the upper electrode layer (2) and the lower electrode layer (4) comprises a simple substance or alloy of a platinum group element; and the charge diffusion prevention mask (1A) is insulative, and is lower in etching rate of dry etching than the upper electrode layer (2) and the lower electrode layer (4).
摘要:
A variable resistance nonvolatile memory element capable of suppressing a variation in resistance values is provided. A nonvolatile memory element according to the present invention includes: a silicon substrate (11); a lower electrode layer (102) formed on the silicon substrate (11); a variable resistance layer formed on the lower electrode layer (102); an upper electrode layer (104) formed on the variable resistance layer; a second interlayer insulating layer (19) formed to directly cover at least side surfaces of the lower electrode layer (102) and the variable resistance layer; a stress buffering region layer (105) for buffering a stress on the upper electrode layer (104), the stress buffering region layer being formed to directly cover at least an upper surface and side surfaces of the upper electrode layer (104) and comprising a material having a stress smaller than a stress of an insulating layer used as the second interlayer insulating layer (19); a second contact (16) extending to the upper electrode layer (104); and a wiring pattern (18) connected to the second contact (16).
摘要:
The present invention provides a magnetoresistive (MR) element that is excellent in MR ratio and thermal stability and includes at least one magnetic layer including a ferromagnetic material M-X expressed by M100-aXa. Here, M is at least one selected from Fe, Co and Ni, X is expressed by X1bX2c,X3d (X1 is at least one selected from Cu, Ru, Rh, Pd, Ag, Os, Ir, Pt and Au, X2 is at least one selected from Al, Sc, Ti, V, Cr, Mn, Ga, Ge, Y, Zr, Nb, Mo, Hf, Ta, W, Re, Zn and lanthanide series elements, and X3 is at least one selected from Si, B, C, N, O, P and S), and a, b, c and d satisfy 0.05≦a≦60, 0≦b≦60, 0≦c≦30, 0≦d≦20, and a=b+c+d.
摘要翻译:本发明提供了一种磁阻(MR)元件,它具有优异的MR比和热稳定性,并且包括至少一个包括由M 100-a X表示的铁磁材料MX的磁性层, / SUB>。 这里,M是选自Fe,Co和Ni中的至少一种,X由X 1表示,X 2, X 1,X 3是选自Cu,Ru,Rh,Pd,Ag,Os,Ir中的至少一种 ,Pt和Au,X 2是选自Al,Sc,Ti,V,Cr,Mn,Ga,Ge,Y,Zr,Nb,Mo,Hf,Ta,W中的至少一种, Re,Zn和镧系元素,X 3是选自Si,B,C,N,O,P和S中的至少一种),a,b,c和d满足0.05 < = a <= 60,0 <= b <= 60,0 <= c <= 30,0 <= d <= 20,a = b + c + d。