WO1989003127A1 - Structure of superconductor wiring and process for its formation - Google Patents
Structure of superconductor wiring and process for its formation Download PDFInfo
- Publication number
- WO1989003127A1 WO1989003127A1 PCT/JP1988/000987 JP8800987W WO8903127A1 WO 1989003127 A1 WO1989003127 A1 WO 1989003127A1 JP 8800987 W JP8800987 W JP 8800987W WO 8903127 A1 WO8903127 A1 WO 8903127A1
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- WO
- WIPO (PCT)
- Prior art keywords
- wiring
- superconductor
- yttrium
- elements
- manufacturing
- Prior art date
Links
- 239000002887 superconductor Substances 0.000 title claims description 51
- 238000000034 method Methods 0.000 title claims description 21
- 230000015572 biosynthetic process Effects 0.000 title claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims description 25
- 238000005468 ion implantation Methods 0.000 claims description 21
- 229910052727 yttrium Inorganic materials 0.000 claims description 19
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 239000001301 oxygen Substances 0.000 claims description 17
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 16
- 150000002602 lanthanoids Chemical class 0.000 claims description 16
- 229910052706 scandium Inorganic materials 0.000 claims description 14
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 11
- 239000012212 insulator Substances 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 9
- 150000002500 ions Chemical group 0.000 claims description 6
- 229910052788 barium Inorganic materials 0.000 claims description 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000002513 implantation Methods 0.000 claims 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 229910052729 chemical element Inorganic materials 0.000 claims 1
- LBGSDOMRVQPKJM-UHFFFAOYSA-N indium yttrium Chemical compound [Y][In] LBGSDOMRVQPKJM-UHFFFAOYSA-N 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 229910052744 lithium Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 239000001569 carbon dioxide Substances 0.000 abstract description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 2
- 230000002950 deficient Effects 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 19
- 229920002120 photoresistant polymer Polymers 0.000 description 10
- 239000004065 semiconductor Substances 0.000 description 9
- 238000000137 annealing Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229910001422 barium ion Inorganic materials 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 241000287828 Gallus gallus Species 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 3
- 230000005428 wave function Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010884 ion-beam technique Methods 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- CPKNPEXMGALOSZ-UHFFFAOYSA-N [Cu]=O.[Y] Chemical group [Cu]=O.[Y] CPKNPEXMGALOSZ-UHFFFAOYSA-N 0.000 description 1
- ITVXALCWBIYZPP-UHFFFAOYSA-N [Sn].[Ba] Chemical compound [Sn].[Ba] ITVXALCWBIYZPP-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- YAXXPIKOJGJMBA-UHFFFAOYSA-N lithium yttrium Chemical compound [Li].[Y] YAXXPIKOJGJMBA-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49866—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers characterised by the materials
- H01L23/49888—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers characterised by the materials the conductive materials containing superconducting material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
- H01L23/53285—Conductive materials containing superconducting materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/01—Manufacture or treatment
- H10N60/0268—Manufacture or treatment of devices comprising copper oxide
- H10N60/0661—Processes performed after copper oxide formation, e.g. patterning
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/01—Manufacture or treatment
- H10N60/0268—Manufacture or treatment of devices comprising copper oxide
- H10N60/0772—Processes including the use of non-gaseous precursors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the present invention relates to a superconductor wiring, and more particularly to a superconductor ceramic wiring structure and a method of manufacturing the same.
- a typical example of a â -ray superstructure made of a superconductor is described by Yamanaka et al. In Electronic Materials, August 1987, Vol. 26, No. 8, pp. 89-92. It is reported in an article entitled âSuperconducting wiring technology on aluminum substrateâ. According to this article, as shown in Fig. 1, a plurality of wiring bodies 100 are printed on a normal alumina base plate and FGA (Fine Grained A 1 u rn ina) substrate 102, respectively. Formed by sintering a plurality of rusted base bodies, the bases being prepared by mixing powder of powdered molybium-copper oxide in an organic vehicle. Sa
- 'It was a thing.
- a plurality of roosters 100 are directly printed on a normal alumina substrate and an FGA substrate 102, and no protective film is provided on the rooster S-line 100.
- the normal Al- : mina substrate 102 is inferior in purity to the FGA substrate, and contains a considerable amount of pure aluminum substrate. ''''
- the above-described conventional superconductor wiring 100 has a problem in its stability.
- the wiring book 100 tends to lose superconductivity in a relatively short period of time, and therefore, the current path is interrupted in those writing objects 100. .
- Another conventional superconductor interconnect is formed using sputtering technology. That is, the target of yttrium-monolithium is sputtered in a vacuum to form an amorphous superconductor material layer, and this amorphous superconductor material is formed. The layer was crystallized by heating to about 900 degrees Celsius in an argon gas atmosphere â . However, since the other superconductor â was crystallized in the high-temperature annealing process, oxygen was volatilized from the superconductor material layer, and a superconductor ceramic having a predetermined composition ratio could not be obtained. I got a point.
- the critical temperature Tc of the superconductor ceramic is largely controlled by the composition ratio of the element, in the sputtering that requires an annealing step in which the amount of volatilized oxygen is difficult to control, the superconductor ceramic is subjected to a predetermined temperature. Reproduced in composition ratio.
- an object of the present invention is to provide a structure of a superconductor wiring which remains in a superconducting state for a long time.
- Another object of the present invention is to provide a method for manufacturing a superconductor wiring structure in which the composition ratio can be easily controlled.
- a superconductor ceramic wire is formed in an insulator lacking any one of the elements contained in the above-described superconducting ceramic, and the conductor is insulated. It is something to protect. '
- a superconducting j $ IE wire structure comprising a superconducting ceramic wire made of â is provided.
- the earth metal Yuan Qin., Zhen and Nitrogen and 0 is a compound made of a compound containing 3 elements selected from 4 elements
- 'Two or more elements may be selected from the group of scandium, yttrium, and lanthanide, and two or more elements may be selected from the alkaline earth metal.
- FIG. 1 is a cross-sectional view of a wiring structure reported by Yamanaka et al.
- FIGS. 2 to 6 are a series of steps for forming a superconductor wire structure according to a first embodiment of the present invention.
- FIG. 7 to FIG. 11 show a series of steps for forming a superconductor wiring structure according to a second embodiment of the present invention.
- FIG. 14 is a plan view showing a superconductor structure according to a third embodiment of the present invention.
- FIGS. 14 to 17 show a superconducting single wiring structure according to a fourth embodiment of the present invention.
- FIG. 18 is a cross-sectional view showing a different process for performing the above steps.
- FIG. 18 shows a superconductor wiring structure according to a fifth embodiment of the present invention. ].
- Reference numeral 1 indicates a substrate of a semiconductor, for example, a single-crystal silicon, and an insulating layer 2, for example, silicon dioxide is grown on the surface of the substrate 1Q. A part of the insulating layer 2 is removed to expose the surface of the semiconductor substrate 1. On the exposed surface, the source electrode 3 and the drain electrode 4 have a gap of about 0.5 micron. At each other. The source electrode 3, the drain electrode 4, and the exposed surface of the semiconductor grave 1 are covered with an insulating layer 5. A gate electrode of a superconductor ceramic is formed on the upper layer 5 through a different process described later. Figure 2 shows the intermediate structure at this stage.
- the target of a compound containing one or more elements selected from the group of scandium, yttrium, and lanthanide, one or more alkaline earth metals, and copper is prepared, and the target is sputtered in a vacuum to apply the amorphous wire layer S on the insulating layer 5. Since the above-mentioned target does not intentionally contain nitrogen, the IH wire layer 6 'does not contain or contains a very small amount of oxygen.
- the wiring layer is put in a high-temperature atmosphere and annealed for crystallization. As described above, since the wiring layer 6 does not contain silicon at this stage, the composition ratio does not change during the high-temperature annealing. As shown in FIG.
- a photoresist 7 is applied on the wiring layer 6 as shown in FIG. 3, and the photoresist 7 is subjected to a different lithography step II to form a pattern. Then, a mask layer 8 is formed.
- the structure of this stage is shown in Figure 4:
- the mask layer 8 is thus formed, the wiring layer 6 is selectively removed by reactive ion etching as shown in FIG. You.
- the ton of this wiring body 9 is about 0.5 micron.
- the shape of the wiring body 9: is defined, the mask layer 8 is not removed, and the syrup is ion-implanted into the I-body 9.
- the amount of nitrogen that can be ion-implanted is the amount necessary to obtain a constant superconducting ceramic composition.
- the superconductivity after ion implantation â ceramic is a molecular formula (Yb3 . having 3 a) C u 3 .0 cord formed ratio represented by Y.
- the superconductor ceramic wiring body 10 shown in FIG. 6 is obtained by annealing at about 500 degrees Celsius.
- the annealing after ion implantation is lower than the annealing after sputtering, and the composition change due to oxygen scavenging can be observed.
- the source electrode 3 and the drain electrode 4 are protected from ion implantation.
- the thickness of the insulating layer 5 may be increased.
- the superconductor ceramic wiring body 10 formed by the above-mentioned first steps functions as a gate electrode of the field-effect transistor.
- the voltage applied to the gate electrode By controlling the voltage applied to the gate electrode, the carrier concentration at the semiconductor interface increases, and the spread of the wave function that seeps from the gate electrode also increases.
- the wave function from the source electrode 3 and the wave function from the drain electrode 4 overlap, and the semiconductor interface becomes a superconductive state. Therefore, the transistor operation can be realized by controlling the voltage of the gate electrode to switch the semiconductor interface between the superconducting state and the normal conducting state.
- the semiconductor substrate is made of single crystal silicon in the above embodiment, it may be made of a compound semiconductor such as indium oxide.
- the lithographic technique was used for pattern formation, but the pattern may be formed by the method described in (1).
- the wiring layer may be formed by a method other than the sputtering, for example, a three-source evaporation method or an ion plating method.
- FIG. 7 an insulating layer 112 is formed on a yttrium-stabilized / zirconia substrate 111.
- This insulating layer 12 is an oxide of the title and sales, for example, a pattern is formed by screen printing. C Then, as shown in FIG.
- the thickness of the photoresist 13 is set to a thickness sufficient to protect a portion of the insulating layer 12 other than a region where a wiring is to be formed in the insulating layer 12 from the ion to be implanted in a later-described ion implantation process.
- a photoresist 14 is partially removed by using a lithographic technique to provide a frontage 14 for exposing a region where a radiation line is to be formed.
- the photo resist mask # 15 is formed as shown in FIG.
- barium ions are implanted into the wiring forming region.
- ion implantation is performed at an output of about 200 KeV, so that barium ions reach a depth of about 350 angstroms in the insulating layer 12 (see FIG. 10).
- the power of the ion implanter is set to about IMeV. .
- the mask layer 15 is removed from above the insulating layer 12 and performs a low annealing at about 500 degrees Celsius to activate the inserted ions.
- the superconductor ceramics of the superconductor ceramics which is in the form of an ultra-small cell, is incomplete, as shown in Fig. I1.
- the distribution of the barrier formed by ion implantation formed in the layer 12 is approximately Gaussian. Therefore, when barium is driven at a force of about 200 eV as described above, a gas distribution having a maximum value of about 350 angstroms is obtained, as shown in Fig. 11.
- the wiring body 16 is formed in the isolated image 12. As a result, the 15-wire body 16 is hardly affected by water vapor in the air or carbon dioxide, and exhibits a superconducting state for a long time.
- the insulating layer 12 is formed on the substrate 11 in the above embodiment, the insulating layer may also serve as the substrate.
- the upper layer may be formed as an oxide J of barium and silver, and may be ion-implanted with yttrium. May be an oxide of yttrium and barium, and copper may be ion-implanted.
- an ion beam may be converged, and a circuit pattern may be drawn directly on the insulating layer with the ion beam.
- the three-dimensional circuit pattern may be formed by repeating this direct drawing and the deposition of yttrium-copper oxide.
- FIG. 12 is a sectional view showing the structure of a superconductor wiring according to a third embodiment of the present invention.
- an insulating layer 22 made of an oxide of indium and copper is screen-printed on an yttrium-stabilized zirconia substrate 21, and a mask layer is formed except for an area where a wiring is to be formed. (Not shown).
- barium is ion-implanted into the wiring formation planned region.
- the output energy is changed stepwise to form a wiring body 23 extending in the depth direction of the insulating layer 22.
- the output energy of the ion implanter is changed in 3 â² stages of about 50 â KeV, about 100 KeV, and about 300 KeV.
- the result is a profile in which three different Gaussian distributions are superimposed on each other, and a rooster S-ray body 23 exposed on the surface of the insulating layer 23 is formed.
- the superconducting wiring structure according to the fourth embodiment is formed on the yttrium-stabilized silicon substrate 31 through the steps described below. That is, as shown in FIG. 13, first, an insulating layer 32 is formed on a jitter stabilized zirconia substrate 31 by, for example, screen printing.
- the insulating layer 32 is an oxide of a low-moisture-permeation layer. The composition ratio of oxygen in the oxide is selected so that the oxide does not become superconductive at the time of use. ing. -Next, as shown in FIG. 14, the photoresist is placed on the insulating layer 32.
- the photoresist 33 is applied, and the photoresist 33 is formed by a conventional lithography technique to form a pattern 34 for exposing the wiring formation area as shown in FIG.
- the thickness of the photoresist 3 â² 3 is selected so that oxygen is hardly mixed in the ion implantation step to be described later in the insulating layer 32 other than the IS line formation region. In this way, the photo resist
- the ion implantation energy is set to about 50 KeV, and the distribution of oxygen reaches the maximum concentration at a height of about 600 angstroms from the surface of the sterilized slaughterhouse 32.
- the ion implantation energy is changed by the appearance of the maximum concentration 1.
- the ion implantation energy is increased by about 200 It may be set to K e V.
- the second layer and the third oxide should form an insulating layer and a wiring book, and the operating temperature should be about 8 ° C. If you set it three times, you can use the first oxide and the second oxide.
- FIG. 18 shows a fifth embodiment of a superconductor IE wire according to the present invention.
- Fig. 18 [The superconducting wiring shown here is a bit stream stable.
- the wiring body 42 of the superconductor ceramic is exposed on the surface of the insulating layer 43.
- an insulating layer 43 is screen-printed on the yttrium-stabilized zirconia substrate 41, and is covered with a mask layer (not shown) except for an area where a wiring is to be formed.
- the insulating layer 43 is made of an oxide of copper.
- the composition ratio of oxygen in the oxide is selected so that the oxide does not become superconductive at a used temperature. Thereafter, oxygen is ion-implanted into the wiring formation planned region.
- the output energy is changed stepwise to form a wiring body 42 extending in the length direction of the insulating layer 43.
- the output energy of the ion implanter is changed in three stages of about 5 KeV, about 10 KeV, and about 30 KeV.
- a profile is obtained in which three different Gaussian distributions are superimposed on each other, and the wiring body 42 exposed on the surface of the insulating layer 43 is formed.
- the wiring body 42 has a substantially constant concentration distribution from the surface of the insulating layer 43 to a length of about 1000 angstroms.
- the superconductor wiring structure and the manufacturing method of the present invention can be applied to a wiring body of a semiconductor integrated circuit and a g-line pattern of a thick film integrated circuit.
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- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
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- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019890700937A KR930001567B1 (ko) | 1987-09-30 | 1988-09-28 | ìŽì ë첎 ë°°ì ì 구조 ë° ê·ž íì±ë°©ë² |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62/248773 | 1987-09-30 | ||
JP62248773A JPS6490574A (en) | 1987-09-30 | 1987-09-30 | Formation of superconductor wiring |
JP62/305370 | 1987-12-01 | ||
JP62305370A JPH01145879A (ja) | 1987-12-01 | 1987-12-01 | è¶ äŒå°äœé ç·ã®æ§é åã³ãã®åœ¢ææ¹æ³ |
JP62332982A JPH01171243A (ja) | 1987-12-25 | 1987-12-25 | è¶ äŒå°äœé ç·ã®æ§é åã³ãã®åœ¢ææ¹æ³ |
JP62/332982 | 1987-12-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1989003127A1 true WO1989003127A1 (en) | 1989-04-06 |
Family
ID=27333752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1988/000987 WO1989003127A1 (en) | 1987-09-30 | 1988-09-28 | Structure of superconductor wiring and process for its formation |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0338084A4 (ja) |
WO (1) | WO1989003127A1 (ja) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63265473A (ja) * | 1987-04-23 | 1988-11-01 | Agency Of Ind Science & Technol | è¶ äŒå°é»ååè·¯ã®äœææ³ |
Family Cites Families (1)
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CN1035087C (zh) * | 1987-05-18 | 1997-06-04 | äœåçµæ°å·¥äžæ ªåŒäŒç€Ÿ | å¶äœè¶ 富çµè·¯åŸåœ¢çæ¹æ³ |
-
1988
- 1988-09-28 EP EP19880908375 patent/EP0338084A4/en not_active Withdrawn
- 1988-09-28 WO PCT/JP1988/000987 patent/WO1989003127A1/ja not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63265473A (ja) * | 1987-04-23 | 1988-11-01 | Agency Of Ind Science & Technol | è¶ äŒå°é»ååè·¯ã®äœææ³ |
Non-Patent Citations (3)
Title |
---|
Physical Review Letters, Vol. 58, No. 9, (1987), M.K. WU et al (Superconductivity at 93K in a New Mixed-Phase Y-Ba-Cu-O Compound System at Ambient Pressure) p. 908-910 * |
See also references of EP0338084A4 * |
Zeitschrift fur Physik B Condensed Matter, Vol. 64, (1986), J.G. BEDNORZ and K.A. MULLER (Possible High Tc Superconductivity in the Ba-LA-Cu-O System) p. 189-193 * |
Also Published As
Publication number | Publication date |
---|---|
EP0338084A4 (en) | 1989-12-14 |
EP0338084A1 (en) | 1989-10-25 |
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