Critical point for the pressure-induced valence Transition in Sm4 Bi3

Shubha, V and Ramesh, TG (1986) Critical point for the pressure-induced valence Transition in Sm4 Bi3. Technical Report. National Aeronautical Laboratory, Bangalore,India.

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Abstract

Sm4 Bi3 first order, which. has - the. -anti-'Ph3P4 {cubic+- -st-rtleture-undergoes a isostructural valence transition near 26 kbar pressure at room temperature.- This transition from the semimetallic to the metallic13; state is accompanied electrical by marked anomalies in both thermoelectric power (TEP) high and resistivity. A significant result of the present pressure, high temperature study is that this phase boundary in the P-T plane terminates at a critical point. The temperature and pressure corresponding to the critical point are around 475xB0;C and 28 kbars. The anomalous behaviour of TEP in the high pressure metallic phase has been interpreted on the basis of a resonance scattering model.

Item Type: Monograph (Technical Report)
Uncontrolled Keywords: Critical point;Valence transition
Subjects: CHEMISTRY AND MATERIALS > Metals and Metallic Materials
Depositing User: Users 90 not found.
Date Deposited: 03 Oct 2006
Last Modified: 24 May 2010 04:20
URI: http://nal-ir.nal.res.in/id/eprint/2812

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