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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4780

Title: MAGNETIC-SUSCEPTIBILITY AND ELECTRICAL-RESISTIVITY MEASUREMENTS ON RPDSN (R = CE-YB) COMPOUNDS
Authors: ADROJA, DT
MALIK, SK
Keywords: earth equiatomic compounds
rare-earth
crystal-structure
mixed-valent
germanides
systems
metals
renisn
Issue Date: 1992
Publisher: AMERICAN PHYSICAL SOC
Citation: PHYSICAL REVIEW B, 45(2), 779-785
Abstract: Magnetic-susceptibility and electrical-resistivity measurements have been carried out on equiatomic ternary compounds, RPdSn (R = Ce-Yb), in the temperature range 4.2 and 300 K. The compounds EuPdSn and YbPdSn have been synthesized. As-cast RPdSn (R = Ce-Yb) compounds crystallize in the orthorhombic TiNiSi-type structure. However, on annealing at 950-degrees-C, Er- and Tm-containing compounds transform to hexagonal Fe2P-type structure. Magnetic-susceptibility measurements reveal that the compounds with R = Ce, Sm, Eu, Gd, Tb, Dy, and Er order antiferromagnetically with Neel temperatures (T(N)) of 7.5, 11, 13, 14.5, 23.5, 11.4, and 5.6 K, respectively. The compounds with R = Pr, Nd, Ho, and Tm are paramagnetic down to 4.2 K. Susceptibility of YbPdSn shows Curie-Weiss behavior between 300-150 K with mu(eff) = 1.45-mu(B) and deviates considerably from it below 150 K. The electrical resistivity of all these compounds exhibits metallic behavior and shows a sharp drop at the respective Neel temperatures. The T(N) of the RPdSn series does not follow de Gennes scaling and, instead, peaks at Tb. This behavior of T(N) can be understood on the basis of crystalline-electric-field effects.
URI: http://dx.doi.org/10.1103/PhysRevB.45.779
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4780
http://hdl.handle.net/10054/4780
ISSN: 0163-1829
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