Transition layer film with Gd mixed with CeO<2> and preparation method thereof

A transition layer and thin film technology, applied in the field of high temperature superconducting material preparation, achieves the effects of flat and compact surface, simple preparation process and long service life
CN101597162BInactive Publication Date: 2011-11-16BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2011-11-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a transition layer film with Gd mixed with CeO2 and a preparation method thereof, belonging to the technical field of high temperature superconduction material preparation. The transition layer film with Gd mixed with CeO2 provided by the invention consists of Ce1-xGdxO2 composite oxide sosoloid, wherein, x is more than or equal to 0.1 and less than or equal to 0.5; and the thickness of the transition layer film is 30-250nm. The invention takes cerium acetate as precursor and gadolinium acetate as gadolinium source, uses chemical solution method to prepare precursor solution, coats the precursor solution on metal base bands by a spin coating or dip coating method, and prepares the transition layer film with Gd mixed with CeO2 by thermal treatment process. The transition layer film with Gd mixed with CeO2 and the preparation method thereof provided by the present invention has the advantages of simple preparation process, low cost, large thickness but no crack of the film, level, even and compact surface of the texture through which the film is capable of extending the base of the film, the role in separating mutual reaction between the superconduction layer and the base material, etc.
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Description

technical field

[0001] The invention belongs to the technical field of high-temperature superconducting material preparation, and in particular relates to the preparation technology of a high-temperature superconducting coating conductor transition layer. Background technique

[0002] The second-generation coated superconductor of rare earth barium copper oxide mainly based on YBCO, due to its high irreversible field, high current carrying capacity, low AC loss, and potential price advantage, was recognized as early as the end of the 1980s. The prediction will have a very broad application prospect. However, due to the intrinsic characteristics of the YBCO material: sufficient oxygen needs to be introduced during the preparation process to convert it into a superconducting phase; the critical current density strongly depends on the angle between the grain boundaries; chemical reactions with most metal materials will occur, resulting in its very It is difficult to prepare hi...

Claims

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