Low-temperature electronic and magnetic properties of single-crystal Ni[sub 3]S[sub 2]

Electrical transport is measured for a crystal and polycrystalline samples of Ni[sub 3]S[sub 2]. The samples display metallic behavior with the relative resistance decreasing by more than two orders of magnitude upon cooling from 300 to 4.5 K. Low-temperature heat-capacity data are obtained by the q...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1994-07, Vol.50:4
Main Authors: Metcalf, P.A., Crooker, B.C., McElfresh, M., Kakol, Z., Honig, J.M.
Format: Article
Language:English
Subjects:
360606 - Other Materials- Physical Properties- (1992-)
CHALCOGENIDES
CORRELATIONS
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON CORRELATION
ELECTRONIC SPECIFIC HEAT
ELECTRONIC STRUCTURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MATERIALS SCIENCE
MONOCRYSTALS
NICKEL COMPOUNDS
NICKEL SULFIDES
PHYSICAL PROPERTIES
POLYCRYSTALS
SPECIFIC HEAT
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
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Summary:Electrical transport is measured for a crystal and polycrystalline samples of Ni[sub 3]S[sub 2]. The samples display metallic behavior with the relative resistance decreasing by more than two orders of magnitude upon cooling from 300 to 4.5 K. Low-temperature heat-capacity data are obtained by the quasiadiabatic heat-pulse method. The electronic-heat-capacity constant is determined to be 2.7 mJ/K[sup 2] mol[sub Ni]. The magnetic measurements on single-crystal and polycrystalline samples yield a mass magnetic susceptibility of 0.3[times]10[sup [minus]6] emu/g [0.4[times]10[sup [minus]8] m[sup 3]/g], which is essentially temperature independent. The Pauli paramagnetic susceptibility is determined to be 5.0[times]10[sup [minus]5] emu/mol[sub Ni] [6.3[times]10[sup [minus]10] m[sup 3]/mol[sub Ni]], corrected for the underlying diamagnetism. Results of the electrical transport, magnetic, and heat-capacity measurements are used to characterize the electronic structure. Application of the standard theory of electron-correlation phenomena shows that Ni[sub 3]S[sub 2] may be categorized as a good metallic conductor for which magnetic instabilities and electronic interactions are of marginal importance.
ISSN:0163-1829
1095-3795
DOI:10.1103/PhysRevB.50.2055