Low temperature resistivity of Ce-La-Th under pressure

Journal Article · Mon Apr 15 04:00:00 EST 1985 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.335181· OSTI ID:5999461

Lawrence, J M; Thompson, J D; Fisk, Z; Batlogg, B

The low temperature resistivity of Ce/sub 0.9-x/La/sub x/Th/sub 0.1/ alloys is known to vary as rho/sub 0/ + ..cap alpha..T/sup 2/. We have investigated the variation of rho/sub 0/ and ..cap alpha.. with pressure for several concentrations x. An unusually strong nonlinear decrease of the residual resistivity with pressure occurs; the magnitude of the decrease is an order-of-magnitude larger than in the isostructural nonmagnetic alloy La/sub 0.8/Th/sub 0.2/. The temperature coefficient ..cap alpha..(P) also decreases strongly. These results are in qualitative accord with recent theories of the resistivity of disordered valence fluctuation compounds.

• Research Organization: Center for Materials Science, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 5999461
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 57:8; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE ALLOYS
ALLOYS
CERIUM ALLOYS
CHEMICAL COMPOSITION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FLUCTUATIONS
LANTHANUM
METALS
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
PRESSURE EFFECTS
RARE EARTH ALLOYS
RARE EARTHS
TEMPERATURE EFFECTS
THORIUM ALLOYS
VARIATIONS