132 results about "Niobium nitride" patented technology

Methods for forming a transition metal niobium nitride film on a substrate by atomic layer deposition and related semiconductor device structures are provided. In some embodiments methods may include contacting a substrate with a first reactant comprising a transition metal precursor, contacting the substrate with a second reactant comprising a niobium precursor and contacting the substrate with a third reactant comprising a nitrogen precursor. In some embodiments related semiconductor device structures may include a semiconductor body and an electrode comprising a transition metal niobium nitride disposed over the semiconductor body.

The present invention is a niobium nitride which has a composition represented by the composition formula Nb₃N₅ and in which a constituent element Nb has a valence of substantially +5. The method for producing the niobium nitride of the present invention includes the step of nitriding an organic niobium compound by reacting the organic niobium compound with a nitrogen compound gas.

PCT No. PCT/JP98/00823 Sec. 371 Date Oct. 28, 1998 Sec. 102(e) Date Oct. 28, 1998 PCT Filed Feb. 27, 1998 PCT Pub. No. WO98/38660 PCT Pub. Date Sep. 3, 1998In a capacitor comprising a pair of electrodes and a dielectric substance intervening between the two electrodes, one of the electrodes is composed of sintered niobium nitride. Preferably, the dielectric substance is composed of niobium oxide and the electrode other than the electrode composed of sintered niobium nitride is composed of an ingredient selected from electrolytes, organic semiconductors and inorganic semiconductors. This capacitor has good environmental stability and good leak current characteristics.

The invention provides a superconductive nanowire single-photon detector capable of distinguishing photon number. The superconductive nanowire single-photon detector consists of N superconductive nanowires which are connected in series and corresponding N bypass resistors, wherein each bypass resistor is arranged between every two adjacent superconductive nanowires; the superconductive nanowires are made from superconductive materials such as niobium nitride or titanium niobium nitride and the like; and the bypass resistors are made from metal films such as gold or titanium and the like. The invention further provides a method for preparing the superconductive nanowire single-photon detector. The prepared superconductive nanowire single-proton detector has high quantum efficiency, high counting efficiency, low dark count and capability of distinguishing photon number, and is not influenced by leakage current.

A layered structure and semiconductor device and methods for fabricating a layered structure and semiconductor device. The layered structure includes: a base layer including a material containing titanium nitride, tantalum nitride, or a combination thereof; a conductive layer including a material containing: tantalum aluminum nitride, titanium aluminum nitride, tantalum silicon nitride, titanium silicon nitride, tantalum hafnium nitride, titanium hafnium nitride, hafnium nitride, hafnium carbide, tantalum carbide, vanadium nitride, niobium nitride, or any combination thereof; and a tungsten layer. The semiconductor device includes: a semiconductor substrate; a base layer; a conductive layer; and a tungsten layer.

The invention relates to a method for preparing a nitrogen-gradient hard reaction membrane of titanium aluminum niobium nitride (TiAlNbN). The method sequentially comprises steps of 1. confirmation of a deposition technique and ingredients of target materials; 2. selection and pretreatment of workpieces; 3. confirmation of a preliminary bombardment process; 4. confirmation of a deposition process; 5. vacuum heating treatment; 6. workpiece revolution. According to the method, the cost for coating is lowered, high adhesive force, high hardness and high thermal shock property of the membrane are guaranteed, furthermore, the inner stress of the membrane is reduced, and the reaction membrane has good stability and repeatability.

The present invention provides a niobium nitride SQUID, a preparation method and a parameter post-processing approach. The preparation method comprises the steps of firstly depositing a niobium nitride-insulating layer-niobium nitride three-layer thin film structure on a substrate, and then preparing a superconducting ring and a bottom electrode structure of the SQUID; then preparing a plurality of parallel Josephson junctions; and then depositing an insulating thin film on the surface of the device, and holing on the surface of each Josephson junction and the surface of the bottom electrode to lead out a top electrode in the subsequent step; and then depositing a metal thin film and preparing a metal bypass resistor; and finally depositing a niobium nitride thin film and preparing a comb-shaped top electrode. By the preparation method and the parameter post-processing method of the present invention, if the numerical values of a critical current and the bypass resistor of the NbN SQUID are discovered to have larger deviation with the design values by a test, the post processing can be carried out on the device, so that the numerical values of the critical current and the bypass resistor approach the design numerical values, and the consistency of the device is improved.

A coated article is provided so as to include a solar control coating having an infrared (IR) reflecting layer sandwiched between at least a pair of dielectric layers. The IR reflecting layer includes niobium nitride (Nb_xN_y). The use of niobium nitride enables the coated article to have good corrosion resistance to acid(s), good mechanical performance such as scratch resistance, and/or good color stability (i.e., a low ΔE* value(s)) upon heat treatment (HT). The coated article may be heat treated (e.g., thermally tempered) in certain example embodiments of the invention.

A NbSi₂-base nanocomposite coating formed on the surface of niobium or niobium-base alloys is disclosed. The nanocomposite coating layer is manufactured by forming a niobium carbide layers or a niobium nitride layers by depositing of carbon or nitrogen on the surface, and then depositing silicon. The nanocomposite coating layer has a microstructure that SiC or Si₃N₄ particles are mostly precipitated on an equiaxed NbSi₂ grain boundary. The thermal expansion coefficients of NbSi₂-base nanocomposite coating layers become close to that of the substrates by adjusting the volume fraction of SiC or Si₃N₄ particles in the nanocomposite coating layers. Accordingly, the generation of cracks caused by thermal stress due to the mismatch in thermal expansion coefficient between the NbSi₂-base nanocomposite coatings and the substrates can be suppressed, thereby improving the high-temperature oxidation resistance in the repeated thermal cycling use of the NbSi₂-base nanocomposite coated substrates. Further, the increase in the volume fraction of dense SiO₂ oxide phase formed on the surface of the NbSi₂-base nanocomposite coating layers improves also high-temperature isothermal oxidation resistance.

A prior-art electronic circuit component comprising an insulating film and a circuit conductive layer made of a superconducting metal suffers low reliability resulting from insufficient adhesion between these layers. An electronic circuit component of the invention comprises an insulating film made of a high polymer material having a dielectric constant of 2.5 or less, a base metal layer formed of copper on the insulating film, having a thickness of 0.01 to 0.3 mu m, and a circuit conductive layer formed of at least one of niobium and niobium nitride on the base metal layer. The electronic circuit component of the invention can accomplish an increased adhesion between the insulating film and the circuit conductive layer. Furthermore, by sequentially forming, on the circuit conductive layer, a conductive-layer coating metal layer made of at least one of aluminum and copper, the insulating film, the base metal layer and the circuit conductive layer, there can be obtained a multi-layered circuit substrate with a superconducting circuit of high density and high-level function.

A niobium cavity exhibiting high quality factors at high gradients is provided by treating a niobium cavity through a process comprising: 1) removing surface oxides by plasma etching or a similar process; 2) removing hydrogen or other gases absorbed in the bulk niobium by high temperature treatment of the cavity under ultra high vacuum to achieve hydrogen outgassing; and 3) assuring the long term chemical stability of the niobium cavity by applying a passivating layer of a superconducting material having a superconducting transition temperature higher than niobium thereby reducing losses from electron (cooper pair) scattering in the near surface region of the interior of the niobium cavity. According to a preferred embodiment, the passivating layer comprises niobium nitride (NbN) applied by reactive sputtering.

The invention discloses a superconducting single-photon detector with a phase grating and a manufacturing method for the superconducting single-photon detector with the phase grating. The superconducting single-photon detector with the phase grating is characterized in that the phase grating is arranged on a nanowire area of a conventional superconducting single-photon detector based on niobium nitride. The grating height of the phase grating is odd-number times the thickness corresponding to the phase of the wavelength pi of incident light. The phase grating on the nanowire area generates the focusing interference effect on light beams, niobium nitride nanowires are located at the focal position, and therefore the absorption efficiency of the niobium nitride nanowires to photons is improved. Simulation results show that the superconducting single-photon detector with the phase grating has the quite high detection efficiency in multiple frequency bands of visible light and infrared light, and the photon absorption efficiency is as high as 72% when the wavelength is 850 nm.

The invention relates to a preparation method of a reaction titanium aluminum zirconium niobium nitride nitrogen-gradient hard reaction film, which sequentially comprises the following steps: 1. determination of deposition technique and target components; 2. workpiece selection and pretreatment; 3. determination of pre-bombarding technique; 4. determination of deposition technique; 5. vacuum heating treatment; and 6. workpiece revolution. The method lowers the coating cost, reduces the internal stress of the film on the premise of ensuring the high adhesive force, high hardness and high thermal shock resistance of the film, and has favorable stability and repeatability.

The invention relates to a nano niobium aluminum yttrium nitride/amorphous silicon nitride dual-phase ultra-hard coating and a deposition method thereof. The ultra-hard coating is of a four-layer structure, wherein the innermost layer is a pure niobium bonding layer, and thickness of the innermost layer is 0.05-0.5 micron; the secondary inner layer is a niobium nitride transition layer, and the thickness of the secondary inner layer is 0.05-1 micron; the secondary outer layer is a gradient layer, component of the niobium nitride is gradually reduced from inside to outside, and components of the niobium aluminum yttrium nitride/the silicon nitride are gradually increased, the thickness of the secondary outer layer is about 0.1-1.0 micron, and concentration on a stress interface can be prevented; and the outermost layer is composite wear-resistant layer of the niobium aluminum yttrium nitride/the silicon nitride, the thickness of the composite wear-resistant layer is 1-10 microns. The total thickness of the coating is 1.2-12.5 microns. Binding force of the coating and a hard alloy matrix reaches 70-105 N, hardness of the coating is 40-60 GPa, friction coefficient of the coating is 0.20-0.55, antioxidant temperature of the coating is 750 DEG C or higher, and service life of a coated micro drill or milling cutter is prolonged by 4-8 times compared with that of an uncoated micro drill or milling cutter.

The purpose of the present invention is to expand application to steel types having corrosion resistance of SUS329J1 or greater. The present invention addresses the problem of obtaining a two-phase stainless steel that both exhibits excellent corrosion resistance in environments with high chloride-ion concentration close to that of brackish water or seawater, and is economically advantageous. Theinventors found that the effect of improving critical pitting temperature (CPT) was likely to be achieved when a minute amount of Nb was added after reducing the amount of Mn to less than 2.0%, and Nto no more than 0.25%. The steel augmented with the minute amount of Nb was subjected to a solid-solution heat treatment, and on determining how depositions of Cr nitride and Nb nitride were affectedthereby, the inventors developed a two-phase stainless steel made of a base material having improved corrosion resistance. When the ratio between the Cr amount [Cr] and the Nb amount [Nb] in extraction residue is brought to 0.2 or greater by controlling the depositions of the chrome nitride and the niobium nitride through gradual cooling to 800 degrees centigrade followed by quick cooling to 600 degrees centigrade, the corrosion resistance can be improved.

The invention discloses a waveguide structure integrated photon number resolution superconducting single-photon detector, and the detector comprises a substrate and a SiOx waveguide structure; a superconducting nanowire single photon detection array formed by connecting a plurality of units in series is arranged between the substrate and the SiOx waveguide, and each unit is formed by connecting aresistor and a nanowire in parallel. According to the invention, extremely weak photons transmitted by the waveguide can be detected at a high speed, the number of the detected photons can be distinguished, and the detector has important application in the field of quantum optical chips. A preparation method provided by the invention comprises the following steps: 1, carrying out magnetron sputtering on a niobium nitride superconducting film on a magnesium fluoride substrate; 2, performing photoetching and stripping to prepare an electrode; 3, preparing a nanowire pattern by electron beam lithography, and obtaining a niobium nitride nanowire array by reactive ion etching; 4, photoetching a resistor pattern, and preparing a parallel resistor; 5, preparing a waveguide pattern by electron beam lithography, and carrying out plasma enhanced chemical vapor deposition to deposit the SiOx waveguide. The preparation process disclosed by the invention is simple in steps and higher in yield.