The effect of ferrimagnetic ordering in insulating component of composites HTSC plus Yttrium Iron Garnet on its transport properties

Описание

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.

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Издание

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

Персоны

  • Balaev D.A. (Kirensky Institute of Physics)
  • Shaihutdinov K.A. (Kirensky Institute of Physics)
  • Popkov S.I. (Krasnoyarsk State University)
  • Petrov M.I. (Kirensky Institute of Physics)