Investigation of magnetic flux gradients in hard superconductors

• Veröffentlicht in: Физика низких температур
• Datum: 2001
• Hauptverfasser: Bruk, V.V., Eremenko, V.V., Makedonskaya, N.I., Shabakayeva, Yu.A., Sirenko, V.A.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2001
• Schlagworte: Низкотемпеpатуpная магнитостpикция магнетиков и свеpхпpоводников
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/130021
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: 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.

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).