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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Balaev D. A., Shaihutdinov K. A., Popkov S. I., Petrov M. I.
Заглавие : The effect of ferrimagnetic ordering in insulating component of composites HTSC plus Yttrium Iron Garnet on its transport properties
Разночтения заглавия :авие SCOPUS: The effect of ferrimagnetic ordering in insulating component of composites HTSC + yttrium iron garnet on its transport properties
Место публикации : Solid State Commun.: PERGAMON-ELSEVIER SCIENCE LTD, 2003. - Vol. 125, Is. 5. - P281-285. - ISSN 0038-1098, DOI 10.1016/S0038-1098(02)00602-6
Примечания : Cited References: 34
Предметные рубрики: SUPERCONDUCTOR
TRANSITION
CURRENTS
Ключевые слова (''Своб.индексиров.''): high-tc superconductors--heterojunctions--magnetically ordered materials--grain boundaries--heterojunctions--high-tc superconductors--magnetically ordered materials--grain boundaries--grain boundaries--heterojunctions--high temperature superconductors--transport properties--yttrium compounds--ferrimagnetic ordering--garnets
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 temperature 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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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shaikhutdinov K. A., Balaev D. A., Popkov S. I., Petrov M. I.
Заглавие : Transport and magnetic properties of Y3/4Lu1/4Ba2Cu3O7+Y3Fe5O12 composites representing a Josephson-type superconductor-ferrimagnet-superconductor weak-link network
Разночтения заглавия :авие SCOPUS: Transport and Magnetic Properties of Y3/4Lu1/4Ba 2Cu3O7 + Y3Fe5O 12 Composites Representing a Josephson-Type Superconductor-Ferrimagnet-Superconductor Weak-Link Network
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2003. - Vol. 45, Is. 10. - P1866-1873. - ISSN 1063-7834, DOI 10.1134/1.1620087
Примечания : Cited References: 36
Предметные рубрики: RESISTIVE PROPERTIES
JUNCTION NETWORK
SYSTEM
TRANSITION
CURRENTS
VOLTAGE
STATE
FIELD
Аннотация: Y3/4Lu1/4Ba2Cu3O7 + Y3Fe5O12 composites with different volume ratios of the starting components were synthesized. The composites model an S-F-S Josephson junction network, where S stands for a superconductor and F, for a ferrimagnet. A study of the transport characteristics of the composites revealed that the temperature behavior of the electrical resistivity rho(T) below the superconducting transition point T-C is different in two regions separated by a temperature T-m. Below T-m, the current-voltage characteristics of the composites are nonlinear, while in the interval from T-C to T-m the values of rho(T) do not depend on the transport current j and magnetic field H. This behavior of rho(T, j ) and rho(T, H) is assigned to specific features of the tunneling of superconducting carriers through the ferrimagnetic layers separating HTSC grains in the composite. Magnetic measurements showed the diamagnetic response of HTSC grains to be lower in composites with a ferrimagnet. (C) 2003 MAIK "Nauka / Interperiodica".
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