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Phase H-T-diagram for MgB₂ granular BCS-superconductor in weak magnetic fields
Репозиторій DSpace/Manakin
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Phase H-T-diagram for MgB₂ granular BCS-superconductor in weak magnetic fields
Тема:
Characterization and properties
Інший ID:
DOI: http://dx.doi.org/10.15407/fm22.03.332
Посилання:
Phase H-T-diagram for MgB₂ granular BCS-superconductor in weak magnetic fields / V.V. Derevyanko, T.V. Sukhareva, V.A. Finkel, Yu.N. Shahov // Functional Materials. — 2015. — Т. 22, № 3. — С. 332-337. — Бібліогр.: 21 назв. — англ.
Дата:
2015
Переглядів:
736
Завантажень:
704
Анотація:
For the purpose of plotting the H-T diagram for MgB₂ granular superconductors, the behavior of electrical resistivity-versus-temperature dependences were studied at ~35 to ~45 K in external magnetic fields with magnetic field strengths Hext up to ~2 kOe. The effect of increasing the superconductivity transition width ΔTc at increased Hext has been revealed. A model has been developed for superconductivity transitions in a two-level system. The data obtained allowed establishing the existence of a weak links system in MgB₂ granular superconductors.
