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- W2003156957 abstract "The Cu K- and Ce L3-edge regions have been measured in the hole doped hybrid structured [Nd2/3(Ce1−xThx)1/3]2(Ba2/3Nd1/3)2Cu3O9−δ (2-2-3), 0≤x≤1.0, compounds which are superconducting for x≤0.30. From the energy positions of the Cu K-edge features, it is clearly noted that 2-2-3 compounds incorporate the K-edge features seen in the oxygen deficient 1-2-3 and the T′-type 2-1-4 superconductors. On progressive Th substitution in 2-2-3, Ce continues to show mixed valence (3+, 4+ predominant), Cu remains mainly in 2+ state and no significant change is seen in the weak feature at Cu1+ position. However, noticeable changes in the split white line features at the Cu K-edge are observed. It is inferred from the analysis of the spectral features that a re-distribution of oxygen on the Cu(1) octahedral (defect) site in 2-2-3 occurs with increasing x, affecting adversely the carrier density. This plausibly causes a steep fall in Tc with Th substitution." @default.
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- W2003156957 date "1999-03-01" @default.
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- W2003156957 title "Manifestation of T′ and 1-2-3 features in [Nd2/3(Ce1−xThx)1/3]2(Ba2/3Nd1/3)2Cu3O9−δ compounds: a XANES study" @default.
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- W2003156957 doi "https://doi.org/10.1016/s0921-4534(99)00039-8" @default.
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