Pressure-induced valence instability in Sm4Bi3

Jayaraman, A. ; Maines, R. G. ; Bucher, E. (1978) Pressure-induced valence instability in Sm4Bi3 Solid State Communications, 27 (7). pp. 709-711. ISSN 0038-1098

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Sm4Bi3 has the anti-Th3P4 (cubic) structure with three Sm2+ ions and one Sm3+ ion. The compound undergoes a first-order, isostructural transition at about 26 kbar. The resistance abruptly decreases by a factor of three and the volume by about 10%. The Sm2+ ions undergo a change towards the 3+ state in the transition and the material goes from semimetallic to a metallic state. The behavior of the resistance anomaly suggests termination of the phase boundary at a critical point.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:96009
Deposited On:30 Nov 2012 07:02
Last Modified:30 Nov 2012 07:02

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