Process for producing superconducting oxide material

A manufacturing method and oxide technology, applied in chemical instruments and methods, cable/conductor manufacturing, copper compounds, etc., can solve problems such as difficulty in controlling orientation, decrease in uniformity, etc., and achieve improved superconducting properties and high manufacturing efficiency. , suitable for mass production

Active Publication Date: 2013-06-12
NAT INST OF ADVANCED IND SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present inventors aim at the fact that in the conventional manufacturing method of superconducting materials, it takes a lot of time to thermally decompose the metal organic compound and form the superconducting substance through heat treatment, and it is difficult to control the orientation. In order to solve the above-mentioned problems due to the fact that the uniformity is lowered due to the reaction of metal organic compounds, a method for efficiently producing a high-performance superconducting material was found when performing thermal decomposition of metal organic compounds and formation of superconducting substances by heat treatment, and Patent applied for (see Patent Document 5)

Method used

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  • Process for producing superconducting oxide material
  • Process for producing superconducting oxide material
  • Process for producing superconducting oxide material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] The coating solution Y1 was spin-coated on the substrate KCl at 4000 rpm for 10 seconds, dried in a constant temperature bath at 130°C in order to remove the solvent, and then the coated surface was irradiated with laser light H1 at room temperature. At this time, the intensity of the laser is set to 16.4mJ / cm 2 The laser scans in one direction, and irradiates with pulse numbers of 10,000, 20,000, 30,000, and 40,000 on one side.

[0118] Other irradiation conditions are as follows.

[0119] room temperature, atmosphere

[0120] Frequency: 100Hz

[0121] Overlap rate: 99%

[0122] Next, the laser-irradiated sample was inserted into a muffle furnace previously kept at 500° C., kept at this temperature for 30 minutes, and then taken out. Then, main firing was performed in a quartz tubular furnace under the following conditions.

[0123] First, in the mixed gas flow of argon and oxygen with the oxygen partial pressure adjusted to 100ppm, the temperature was raised to 7...

Embodiment 2

[0129] For comparison, except that laser irradiation is not carried out, other YBCO films with a film thickness of about 100nm made in the same manner as in Example 1, the Jc obtained by the induction method is within the detection limit (0.1MA / cm 2 )the following.

Embodiment 3

[0131] In addition to making the laser intensity 11mJ / cm 2 , the number of pulses is 500, and the amount of total energy is 5.5J / cm 2 In addition, other YBCO films with a film thickness of about 100 nm produced in the same manner as in Example 1 had a Jc of 1.1 MA / cm obtained by the induction method. 2 .

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Abstract

A method of producing a superconductive material involves the step (1) of applying a solution of an organic compound of metals, oxides of the metals forming a superconductive material, onto a support body to be subsequently dried, a provisional baking step (2) of causing organic components of the organic compound of the metals to undergo thermal decomposition, and a main baking process step (3) of causing transformation of the oxides of the metals into the superconductive material, thereby producing an epitaxially-grown superconductive coating material, wherein at the time of irradiation of a surface of the support body coated with the solution of the organic compound of the metals for forming the superconductive material, and / or of a surface of the support body, opposite to the surface coated with the solution of the organic compound of the metals, with the laser light, during a period between the steps (1) and (2).

Description

technical field [0001] The present invention relates to the manufacture method of the superconducting substance used in the field of electric power transmission, electric power equipment, information equipment, more specifically, relates to the superconducting material film (current limiter, microwave filter, tape material) that is coated with superconducting substance , wire) manufacturing method. Background technique [0002] Conventionally, after applying an organic compound solution containing a metal element constituting a superconducting substance on a substrate and drying it (1), the organic component decomposition step (2) (pre-firing) and superconducting Material formation step (3) (main firing) (see Patent Document 1). [0003] In addition, a method for producing metal oxides and metal oxide thin films using excimer lasers is known, which is characterized in that when producing metal oxides (which do not exhibit superconductivity), metal organic acid salts or orga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B12/06C01G1/00C01G3/00H01B13/00
CPCH01L39/2425H01L39/249H01L39/2451C23C18/14C23C18/1295C23C18/1216C23C18/1245C23C18/143H10N60/0324H10N60/0548
Inventor 相马贡土屋哲男熊谷俊弥塚田谦一小柳邦彦海老泽孝大津英彦
Owner NAT INST OF ADVANCED IND SCI & TECH
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