Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1007/s10948-017-4400-2

Ключевые слова: Peak effect, Fishtail, Magnetization, Critical current, Order-disorder transition, Boltzmann function, Extended critical state model, Phase separation, Type II superconductor

Аннотация: Order-disorder transitions of a vortex lattice transfer type-II superconductors from a low critical current state to a high one. The similar transition between different current states can be caused by electromagnetic granularity. A sigmoid curve is proposed to describe the corresponding peak in a field dependence of the macroscopic critical density. Using the extended critical state model, analytic expressions are obtained for the field dependencies of the local critical current density, the depth of equilibrium surface region, and the macroscopic critical current density. The expressions are well fit to published data.

Журнал: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM

Выпуск журнала: Vol. 31, Is. 6

Номера страниц: 1785-1789

ISSN журнала: 15571939

Место издания: NEW YORK

Издатель: SPRINGER

• Gokhfeld Denis (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)

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