Synthesis of high-temperature superconducting yttrium-barium cuprate single crystals and study of their properties

• Дата: 2002
• Автори: Bakuntseva, M.V., Gorbik, P.P., Dubrovin, I.V., Kashin, G.N., Laguta, I.V., Nastasienko, A.I.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут хімії поверхні ім. О.О. Чуйка НАН України 2002
• Назва видання: Поверхность
• Теми: Surface properties of inorganic materials
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/126357
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Synthesis of high-temperature superconducting yttrium-barium cuprate single crystals and study of their properties / M.V. Bakuntseva, P.P. Gorbik, I.V. Dubrovin, G.N. Kashin, I.V. Laguta, A.I. Nastasienko // Поверхность. — 2002. — Вип. 7-8. — С. 102-111. — Бібліогр.: 7 назв. — англ.

The method of synthesis of stack-plated single crystals of YBa₂Cu₃O₆₊δ high-temperature superconductor has been improved. The method is based on combination of the processes of mass-nucleation and directional crystallization from the solution-melt by Czochralski. The single crystals with the natural cuts and plate habitus of 8 mm in length have been grown. Diffusion of silver from thin films (10-20 nm) into the YBa₂Cu₃O₆₊δ single crystals has been studied in the temperature range 373-773K with the use of Auger electron spectroscopy. Diffusion activation energy and pre-exponential factor have been determined. The mechanism with participation of oxygen vacancies has been suggested as a principal diffusion mechanism.