Investigation of magnetic flux gradients in hard superconductors

Investigation of magnetic flux gradients in hard superconductors

Bruk, V.V. ; Eremenko, V.V. ; Makedonskaya, N.I. ; Shabakayeva, Yu.A. ; Sirenko, V.A.

Тема: Низкотемпеpатуpная магнитостpикция магнетиков и свеpхпpоводников

Інший ID: PACS: 75.30.Kz

URI: http://dspace.nbuv.gov.ua/handle/123456789/130021

Посилання: Investigation of magnetic flux gradients in hard superconductors / V.V. Bruk, V.V. Eremenko, N.I. Makedonskaya, Yu.A. Shabakayeva, V.A. Sirenko // Физика низких температур. — 2001. — Т. 27, № 4. — С. 419-424. — Бібліогр.: 13 назв. — англ.

Підтримка: The authors acknowledge Dr. S. B. Feodosyev for his assistance in computations. We are grateful to Prof. H. Szymczak for stimulating discussions.

Дата: 2001

Завантажень: 347

Investigation of magnetic flux gradients in hard superconductors

Анотація:

Analytical calculations of the transverse magnetostriction in a thin hard superconductor are presented in relation to the distributions of currents and fields within a superconducting specimen in a varied magnetic field. The approach is successfully tested on high-temperature superconductors. The flux distribution derived from magnetostriction measurements is in satisfactory agreement with that obtained from computer processing of magnetooptical images. The magnetic flux distribution below the irreversibility line of hard superconductors is derived from both original magnetization and magnetostriction measurements and image processing. Perfect consistency of the results is obtained for a family of high-temperature superconductors (La₂₋xSrxCuO₄, Bi₂Sr₂CaCu₂Ox, YBa₂Cu₃O₇₋d).

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