摘要:
A precursor for fabricating a Nb3Sn superconducting wire by an internal Sn process includes one or a plurality of stabilizing copper portions collectively disposed in the center, each stabilizing copper portion being provided with a diffusion barrier layer in the periphery thereof, and a superconducting matrix portion disposed so as to surround the one or the plurality of stabilizing copper portions, the superconducting matrix portion including a Nb or Nb-based alloy core and a Sn or Sn-based alloy core embedded in a Cu or Cu-based alloy matrix.
摘要:
According to the present invention, it is provided a method of manufacturing a semiconductor device comprising a PMOS transistor and a NMOS transistor, wherein the method facilitates obtaining a FUSI phase of a suitable composition for the NMOS transistor and the PMOS transistor respectively, with fewer mask layers and through a fewer number of manufacturing steps.
摘要:
There is provided a semiconductor device in which deviation in a work function is prevented by a gate electrode having a uniform composition and which has excellent operation properties by effectively controlling a Vth. The semiconductor device comprises an NMOS transistor and a PMOS transistor with a common line electrode, characterized in that the line electrode comprise an electrode section (A), an electrode section (B) and a diffusion barrier region formed in a part over an isolation region so that the electrode sections (A) and (B) are kept out of contact and the diffusion barrier region meets at least one of the following conditions (1) and (2). (1) The diffusion coefficient D1 in the above diffusion barrier region of the constituent element A′ of the above electrode section (A) is lower than the interdiffusion coefficient D2 of the constituent element A′ between electrode section (A) materials. (2) The diffusion coefficient D3 in the above diffusion barrier region of the constituent element B′ of the above electrode section (B) is lower than the interdiffusion coefficient D4 of the constituent element B′ between electrode section (B) materials.
摘要:
In a method of manufacturing a thin film, a buffer layer is formed a substrate. Thereafter, a ferroelectric thin film material is applied thereto before thermally decomposing the buffer layer. Subsequently, the buffer layer and the ferroelectric thin film are decomposed together. Finally, a crystallized thermal process is performed.
摘要:
The surface of a Si substrate is coated with a lower electrode of precious metal (Pt), then a buffer layer comprising an oxide thin film containing Bi is deposited. On the surface of the buffer layer, a thin film of a Bi layer structured ferroelectric substance is formed. Thus, reaction of the Bi layer structured ferroelectric substance with the precious metal coating the Si substrate is avoided during crystallization carried out at a low temperature. Therefore, deviation in composition of the thin film thus formed is suppressed to provide the thin film with a high density. When the thickness of the buffer layer is not greater than five percent of that of the Bi layer structured ferroelectric thin film, electrical characteristics of a capacitor are not deteriorated. When electrical connection is conducted by polycrystalline Si, production of oxide can be avoided by deposition at 650° C.
摘要:
Disclosed is an oxide thin film producing method and apparatus for producing an oxide thin film having excellent crystallinity and purity with high productivity while correctly controlling the composition of the oxide thin film. After reducing the pressure inside a vacuum chamber to 1.times.10.sup.-9 Torr or less, a metal thin film is formed by evaporating a specified metal element and depositing vapor of the metal element on a substrate in the vacuum chamber. Then a cover member is moved upward to closely abut to a cover receiving member to thereby form an airtight chamber for enclosing the substrate airtightly in the vacuum chamber. With the degree of vacuum around the airtight chamber maintained, O.sub.2 gas is directly introduced into the airtight chamber through a gas piping to oxidize the metal thin film and thereby form an oxide thin film. At the same time, the gas inside the airtight chamber is discharged directly out of the vacuum chamber through a gas piping.
摘要:
A bivalent europium-activated alkaline earth haloborate phosphor which contains lithium as coactivator, a process for its production, and an ultraviolet ray excited fluorescent tube such as a fluorescent lamp having a fluorescent layer containing such a phosphor as the blue-emitting component.
摘要:
Magnetic recording media, wherein a substrate of Al-Mg alloy prepared from aluminum metal at a purity of higher than 99.99% is surface finished by electrolytic abrasive polishing and a thin film layer of ferromagnetic material is formed thereover as a recording layer.The Al-Mg alloy is preferably prepared by rapid-cooling solidification.
摘要:
A phosphor for emission of light under low-velocity electron excitation having the formula:(Zn.sub.1-X,Cd.sub.x)S:aLi,bM.sup.I,cX (I)wherein 0.ltoreq.x.ltoreq.1, 0 0, M.sup.I is at least one element selected from the group consisting of Na, K, Ag, Rb, Cs, Au and Cu, and X is at least one element selected from the group consisting of Al, Cl, Br and I.
摘要:
A zinc silicate phosphor represented by the formula:(Zn.sub.1-x-2y, M.sup.II.sub.x, Na.sub.2y).sub.2 SiO.sub.4 :Mn.sub.a, As.sub.b, M.sub.c (I)where M.sup.II is at least one element selected from the group consisting of barium, calcium and strontium, M is at least one of antimony and bismuth, and x, y, a, b and c satisfy the conditions of O.ltoreq.x.ltoreq.5.times.10.sup.-2, O.ltoreq.2y.ltoreq.5.times.10.sup.-3, 5.times.10.sup.-5 .ltoreq.a.ltoreq.3.times.10.sup.-2, O.ltoreq.b.ltoreq.5.times.10.sup.-3 and O