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Preparation method of double-sided lamno3 buffer layer for superconducting tape

A superconducting tape and buffer layer technology, applied in the usage of superconducting elements, superconducting devices, cable/conductor manufacturing, etc., can solve the problem of high surface flatness, achieve high surface flatness, increase deposition rate, and stability sex improvement effect

Inactive Publication Date: 2016-01-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention provides a rapid and continuous preparation of double-sided second-generation high-temperature superconducting tape buffer layer LaMnO 3 The method, using this method can realize the rapid, stable and continuous preparation of the high temperature superconducting tape buffer layer, the prepared film has good double-sided consistency and single-sided uniformity, high degree of orientation, high surface flatness, effectively overcome Solved the problems of low deposition rate and low production efficiency in the prior art

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  • Preparation method of double-sided lamno3 buffer layer for superconducting tape
  • Preparation method of double-sided lamno3 buffer layer for superconducting tape
  • Preparation method of double-sided lamno3 buffer layer for superconducting tape

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Embodiment Construction

[0028] A specific embodiment of the present invention will be described in detail below.

[0029] A kind of double-sided LaMnO for superconducting tape 3 Preparation method of the buffer layer. Specific steps are as follows:

[0030] Step 1: A Hastelloy substrate with a length of 1 m, a width of 10 mm, and a thickness of 0.8 μm coated with yttrium oxide / IBAD-magnesia / homoepitaxial magnesium oxide prepared by double-sided solution planarization was installed on the Between the first turntable 1 and the second turntable 8, the first turntable 1 is driven to move at a constant speed by a stepping motor with a speed controller.

[0031] The second step: place the manganese-lanthanum alloy target (manganese-lanthanum atomic ratio is 1:1) (length is 400 mm, width is 40 mm, thickness is 5 mm) respectively on the target 4, using heating resistance wire 3 pairs of base bands Heating is carried out, and the relative temperature is measured with a thermocouple 10 . The first turntable ...

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Abstract

The invention discloses a method for preparing double-sided LaMnO3 buffer layers for superconducting strips, belonging to the technical field of superconducting materials. It includes the following steps: (1) install the flexible base tape between two turntables; (2) place manganese-lanthanum alloy targets with a length of 400 mm, a width of 40 mm, and a thickness of 5 mm on the opposite target respectively, and the front and back of the base tape are respectively connected to the Facing the manganese-lanthanum alloy target on the target; (3) Vacuum the growth chamber to below 1×10-3Pa, heat the baseband to keep the temperature at about 750°C, fill it with argon to 0.5Pa and maintain it, Then use the U-shaped intake pipe to fill in 1.2×10-3 to 2.5×10-3Pa oxygen; (4) Turn on the intermediate frequency power supply to form a glow area near the target; (5) The stepping motor drives the baseband to pass through the glow area at a constant speed Deposit thin film; (6) Turn off sputtering. The invention adopts intermediate frequency sputtering and an ultra-long target structure, improves the deposition rate of the thin film, and is beneficial to the rapid and continuous preparation of long strips.

Description

technical field [0001] The invention belongs to the technical field of superconducting materials, in particular to a preparation method of a buffer layer of a superconducting tape. Background technique [0002] Superconductors have many unique properties, such as zero resistance, complete diamagnetism (Meissner effect) and superconducting tunnel effect (Josephson effect), etc. These properties can be used to develop many valuable devices in scientific research and production, such as Strong magnets, superconducting quantum interference devices (SQUIDs), high-efficiency motors and lossless power transmission systems, etc. The discovery of high-temperature superconductors in 1986 increased the working temperature of superconductors from the liquid helium temperature range (4.2K) to the liquid nitrogen temperature range (77K), which broadened the application prospects of superconductors. [0003] The first generation of bismuth-based high-temperature superconducting tape (BSCC...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/38H01B12/06H01B13/00
CPCY02E40/60
Inventor 熊杰黎朝仁夏钰东薛炎赵晓辉陶伯万李言荣
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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