Jayaraman, A. ; Bucher, E. ; Dernier, P. ; Longinotti, L. (1973) Temperature-induced explosive first-order electronic phase transition in Gd-doped SmS Physical Review Letters, 31 (11). pp. 700-703. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v31/i11/p700_1
Related URL: http://dx.doi.org/10.1103/PhysRevLett.31.700
Abstract
We have found a reversible temperature-induced explosive first-order electronic phase transition, with decreasing temperature at atmospheric pressure, in Sm1-xGdxS for 0.16<~x<0.22. The shiny golden-yellow metallic crystal disintegrates to a black powder. The transition is isostructural, but the unit cell expands from a≈5.68 to 5.82 Å. The Sm ion in the black phase is characterized by an intermediate valence of ∼2.45. We present a phase diagram showing the stability regions in the T-x plane and discuss a plausible driving mechanism for the transition.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 96002 |
| Deposited On: | 30 Nov 2012 09:12 |
| Last Modified: | 30 Nov 2012 09:12 |
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