Sundaresan, A. ; Ghosh, K. ; Ramakrishnan, S. ; Gupta, L. C. ; Chandra, Girish ; Sharon, M. ; Vijayaraghavan, R. (1994) Magnetic and superconducting properties ofTlSr2Ca1−xRxCu2O7[R=Gd (x=0.6,1.0); Ho,Yb (x=1.0)]: HighTN(=3.1 K) in a Gd system Physical Review B, 49 (9). pp. 6388-6391. ISSN 0163-1829
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Official URL: http://doi.org/10.1103/PhysRevB.49.6388
Related URL: http://dx.doi.org/10.1103/PhysRevB.49.6388
Abstract
Magnetic and superconducting properties of single-Tl-O-layered TlSr2Ca1−xRxCu2O7 [R=Gd (x=0.6,1.0);Ho,Yb (x=1.0)] have been studied. The antiferromagnetic ordering temperature of Gd moments in nonsuperconducting TlSr2GdCu2O7 is 3.1 K, which is the highest among the corresponding nonsuperconducting parent cuprates. The materials based on Ho and Yb do not order magnetically down to 1.5 K. Superconductivity (Tc=60 K) and antiferromagnetic ordering (TN=1.8 K) coexist in TlSr2Ca0.4Gd0.6Cu2O7. The low value of the effective magnetic moment (2.9μB) of Yb along with the lattice constant anomaly suggest that Yb ions are in a mixed valence state in TlSr2YbCu2O7.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 120213 |
Deposited On: | 24 Jun 2021 06:04 |
Last Modified: | 24 Jun 2021 06:04 |
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