Тип публикации: статья из журнала
Год издания: 2003
Идентификатор DOI: 10.1016/S0038-1098(02)00602-6
Ключевые слова: high-Tc superconductors; heterojunctions; magnetically ordered materials; grain boundaries
Аннотация: Composites Y3/4Lu1/4Ba2Cu3O7 + Y3Fe5O12 modeling random network superconductor-ferrimagnetic-superconductor have been prepared and their transport properties (temperature dependences of resistivity rho and critical current density j(c), current-voltage characteristics) have been studied. Below the superconducting transition temperaПоказать полностьюture T-m the rho(T) dependences exhibit a kink at some temperature T-m. The crossover of current-voltage characteristics from ohmic-like behavior in range T-m/T-c to non-linear one below T-m is observed. Transport properties of the 'benchmark' composites Y3/4Lu1/4Ba2Cu3O7 + Y3Al5O12 are typical for network superconductor-insulator-superconductor Josephson junction. The behavior observed for Y3/4Lu1/4Ba2Cu3O7 + Y3Fe5O12 composites is attributed to peculiarities of supercurrent carriers tunnelling through ferrimagnetic barriers. (C) 2002 Elsevier Science Ltd. All rights reserved.
Журнал: SOLID STATE COMMUNICATIONS
Выпуск журнала: Vol. 125, Is. 5
Номера страниц: 281-285
ISSN журнала: 00381098
Место издания: OXFORD
Издатель: PERGAMON-ELSEVIER SCIENCE LTD