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Type: Artigo de periódico
Title: Rare Earth Ionic Size Dependence Of Tc In Rbasrcu3o7 (r = Y, Dy, Nd, And La) Series
Author: Awana V.P.S.
Cardoso C.A.
De Lima O.F.
Malik S.K.
Yelon W.B.
Prasad R.
Gupta A.
Sedky A.
Narlikar A.V.
Abstract: Superconducting transition temperature (Tc), measured by ac susceptibility technique, was determined for the RBaSrCu3O7 compounds with R = Y, Dy, Nd and La. Rare earth dependence of Tc in RBaSrCu3O7 series is quite different than that observed in RBa2Cu3O7 (R:123) series. Neutron diffraction studies reveal that the title compounds with R = Y, Dy crystallize in the orthorhombic R:123 structure with orthorhombicity considerably smaller than that of the R:123 compounds. In fact, the orthorhombicity reduces so much that the RBaSrCu3O7 compounds with light rare earths, R = La and Nd, are tetragonal or almost tetragonal. © 2000 Elsevier Science B.V. All rights reserved.
Rights: fechado
Identifier DOI: 
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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