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Researches and developments on production of Ni-W alloy based substrates for second generation high-temperature superconductors

The possibilities to prepare high quality substrates for second generation high temperature superconductors based on Ni—W alloys in the 0-9.5 at. % W concentration range was studied. Researches and developments were carried out in the following directions: a) Ni—W alloy synthesis; b) preparation of...

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Bibliographic Details
Main Authors: Finkel, V.A., Bovda, A.M., Derevyanko, V.V., Leonov, S.A., Sungurov, M.S., Sukhareva, T.V., Khoroshikh, V.M., Shakhov, Yu.N.
Format: Article
Language:English
Published: НТК «Інститут монокристалів» НАН України 2012
Series:Functional Materials
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Online Access:http://dspace.nbuv.gov.ua/handle/123456789/135284
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Summary:The possibilities to prepare high quality substrates for second generation high temperature superconductors based on Ni—W alloys in the 0-9.5 at. % W concentration range was studied. Researches and developments were carried out in the following directions: a) Ni—W alloy synthesis; b) preparation of Ni—W alloy tapes by rolling with subsequent heat treatment; c) coating the tape by TiN layer. For the first time, the possibility was established to obtain the {001} <100> cubic texture favour to YBa₂Cu₃O₇₋₈ superconductor subsequent epitaxial growth on the high W paramagnetic Ni—W tape surface by varying the regimes of TiN deposition.