Jayaraman, A. ; Remeika, J. P. ; Espinosa, G. P. ; Cooper, A. S. ; Barz, H. ; Maines, R. G. ; Fisk, Z. (1981) High pressure synthesis of the mixed valent and nonsuperconducting ternary YbRhxSny compound Solid State Communications, 39 (10). pp. 1049-1051. ISSN 0038-1098
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0038-1098(81)90205-2
Abstract
The ternary compound YbRh1.4Sn4.6 with the phase I structure (simple cubic) when subjected to a pressure of 40 kbar at 800°C is found to transform to phase III structure (f.c.c.) with the composition YbRh1.1Sn3. The latter compound has a lattice parameter of a=13.735 Å which suggests that the Yb is in an intermediate valence state. The temperature dependence of magnetic susceptibility suggests that the Yb is in a homogeneously mixed valence state in the pressure synthesized product. In the phase I structure YbRh1.1Sn4.6 is superconducting at 8.6°K, but in the phase III structure the compound YbRh1.1Sn3 is not superconducting down to 0.9°K. It is suggested that superconductivity and mixed valence are incompatible.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 96023 |
| Deposited On: | 30 Nov 2012 09:00 |
| Last Modified: | 30 Nov 2012 09:00 |
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