摘要:
According to one embodiment, a memory device includes a first electrode, a second electrode, and a variable resistance film. The variable resistance film is connected between the first electrode and the second electrode. The first electrode includes a metal contained in a matrix made of a conductive material. A cohesive energy of the metal is lower than a cohesive energy of the conductive material. A concentration of the metal at a central portion of the first electrode in a width direction thereof is higher than concentrations of the metal in two end portions of the first electrode in the width direction.
摘要:
There is provided a semiconductor device in which degradation of reliability originating in the interface between an upper insulating layer and an element isolation insulating layer is suppressed. The semiconductor device includes: a semiconductor region; a plurality of stacked structures each of which is disposed on the semiconductor region and has a tunnel insulating film, a charge storage layer, an upper insulating layer, and a control electrode stacked sequentially; an element isolation insulating layer disposed on side faces of the plurality of stacked structures; and a source-drain region disposed on the semiconductor region and among the plurality of stacked structures. The element isolation insulating layer includes at least one of SiO2, SiN, and SiON, the upper insulating layer is an oxide containing at least one metal M selected from the group consisting of a rare earth metal, Y, Zr, and Hf, and Si, and respective lengths Lcharge, Ltop, and Lgate of the charge storage layer, the upper insulating layer, and the control electrode in a channel length direction satisfy the relation “Lcharge
摘要:
According to one embodiment, a resistance change memory includes a memory cell including a resistance change element and a stacked layer structure which are connected in series, a control circuit configured to control a first operation of changing the resistance change element from a first resistance value to a second resistance value lower than the first resistance value, and a voltage pulse generating circuit configured to generate a first voltage pulse to be applied to the memory cell in the first operation. The stacked layer structure includes two conductive layers and an insulating layer formed between the two conductive layers. Amplitude of the first voltage pulse is in a first voltage area in which the stacked layer structure functions as a capacitor. The first voltage pulse satisfies Ron×C
摘要:
A coil component having an easily discernible orientation, and a method of producing such a coil component that facilitates the injection of resin. A coil component includes a core with a winding portion, first and second flanges disposed on either end of the winding portion, and a winding accommodating region defined by the winding portion and the first and second flanges, terminal electrodes disposed on the second flange and a winding wound about the winding portion and connected to the terminal electrodes. An insulating resin is formed over the winding at the winding accommodating region. A marker made from a material the same as the insulating resin is provided at outer peripheral surface of the flanges.
摘要:
A method of fabricating by co-sputtering deposition a lanthanoid aluminate film with enhanced electrical insulativity owing to suppression of deviation in composition of the film is disclosed. Firstly within a vacuum chamber, hold two separate targets, one of which is made of lanthanoid aluminate (LnAlO3) and the other of which is made of aluminum oxide (Al2O3). Then, transport and load a substrate into the vacuum chamber. Next, introduce a chosen sputtering gas into this chamber. Thereafter, perform sputtering of both the targets at a time to thereby form a lanthanoid aluminate film on the substrate surface. This film is well adaptable for use as ultra-thin high dielectric constant (high-k) gate dielectrics in highly miniaturized metal oxide semiconductor (MOS) transistors.
摘要:
A nonvolatile semiconductor memory device includes: a tunneling insulating film; a floating gate electrode; an inter-electrode insulating film, in which an interface facing the floating gate electrode and an interface facing a control gate electrode are defined as the first interface and the second interface, respectively; and a control gate electrode. The inter-electrode insulating film includes one or more first elements selected from rare earth elements, one or more second elements selected from Al, Ti, Zr, Hf, Ta, Mg, Ca, Sr and Ba, and oxygen. A composition ratio of the first element, which is defined as the number of atoms of the first element divided by that of the second element, is changed between the first interface and the second interface, and the composition ratio in the vicinity of the first interface is lower than that in the vicinity of the second interface.
摘要:
A memory cell in a nonvolatile semiconductor memory device includes a tunneling insulating film, a floating gate electrode made of a Si containing conductive material, an inter-electrode insulating film made of rare-earth oxide, rare-earth nitride or rare-earth oxynitride, a control gate electrode, and a metal silicide film formed between the floating gate electrode and the inter-electrode insulating film.
摘要:
A method for manufacturing a lanthanum oxide compound on a substrate includes: setting the number of H2O molecule, the number of CO molecule and the number of CO2 molecule to one-half or less, one-fifth or less and one-tenth or less per one lanthanum atom, respectively, the H2O molecule, the CO molecule and the CO2 molecule being originated from an H2O gas component, a CO gas component and a CO2 gas component in an atmosphere under manufacture; and supplying a metal raw material containing at least one selected from the group consisting of lanthanum, aluminum, titanium, zirconium and hafnium and an oxygen raw material gas simultaneously for the substrate under the condition that the number of O2 molecule are set to 20 or more per one lanthanum atom, thereby manufacturing the lanthanum oxide compound on the substrate.