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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2009, Volume 90, Issue 5, Pages 408–411
(Mi jetpl529)
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This article is cited in 4 scientific papers (total in 4 papers)
CONDENSED MATTER
Unusually strong coherent response from grain-boundary Josephson network in polycrystalline Pr$_x$Y$_{1-x}$Ba$_2$Cu$_3$O$_{7-\delta}$
V. Riveraa, S. Sergeenkova, С. Stariab, L. J. Cichettoa, C. A. Cardosoa, E. Maregac, F. M. Araujo-Moreiraa a Departamento de Física e Engenharia
Física, Grupo de Materiais e Dispositivos,Centro Multidisciplinar para o Desenvolvimento de Materiais Cerâmicos,Universidade Federal de São Carlos, 13565-905 São Carlos,
SP Brazil
b Instituto de Física, Facultad de Ingenieria, Julio Herrera y Reissig 565, C.C. 30, 11000, Montevideo, Uruguay
c Instituto de Física, USP, 13560-970 São Carlos, SP,
Brazil
Abstract:
By applying a highly sensitive homemade AC susceptibility technique to Pr$_x$Y$_{1-x}$Ba$_2$Cu$_3$O$_{7-\delta}$ polycrystals (with $x=0.0$, $0.1$ and $0.3$), we observed very sharp Fraunhofer type low-field periodic oscillations of the real part of the AC susceptibility which were attributed to Josephson vortices penetrating intergranular regions of grain-boundary Josephson network in our samples. Assuming the Lorentz type distribution of single-junction contact areas, we were able to successfully fit the experimental data.
Received: 23.06.2009 Revised: 23.07.2009
Citation:
V. Rivera, S. Sergeenkov, С. Stari, L. J. Cichetto, C. A. Cardoso, E. Marega, F. M. Araujo-Moreira, “Unusually strong coherent response from grain-boundary Josephson network in polycrystalline Pr$_x$Y$_{1-x}$Ba$_2$Cu$_3$O$_{7-\delta}$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 90:5 (2009), 408–411; JETP Letters, 90:5 (2009), 365–369
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https://www.mathnet.ru/eng/jetpl529 https://www.mathnet.ru/eng/jetpl/v90/i5/p408
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