Structure, electrical transport, and magnetic properties of the misfit layer compound (CeS) sub 1. 16 NbS sub 2 , CeNbS sub 3

Journal Article · Sat Dec 01 00:00:00 EST 1990 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(90)90274-2· OSTI ID:6013099

Wiegers, G A; Meetsma, A; Haange, R J; De Boer, J L ^[1]

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1. Materials Science Center of the University, Groningen (Netherlands)

(CeS){sub 1.16}NbS{sub 2} is a misfit layer compound built of alternate double layers of CeS, approximately a {l brace}100{r brace} slice of NaCl type CeS, and sandwiches of NbS{sub 2} with Nb in slightly distorted trigonal prisms of sulfur. The two structural units in the composite crystal are described in centered orthorhombic lattices: a{sub 1} = 5.727(1) {angstrom}, b{sub 1} = 5.765(1) {angstrom}, c{sub 1} = 11.41(1) {angstrom}, space group Cm2a, Z = 4 for the CeS lattice and a{sub 2} = 3.311(1) {angstrom}, b{sub 2} = 5.765(1) {angstrom}, c{sub 2} = 22.82(2) {angstrom}, space group Fm2m, Z = 4 for the NbS{sub 2} lattice. Corresponding axes are parallel and the stacking direction is c. Refinements of the CeS part, the NbS{sub 2} part, and the common projection using 889, 288, and 135 reflections, respectively, converged to R{sub F} = 0.048, 0.069, and 0.072, respectively. The electrical conduction is metallic with a strong anisotropy, the resistivity along the c axis, {rho}{sub c}, being about 10{sup 4} larger than the in-plane resistivity {rho}{sub ab}. The conduction is by holes in an almost filled 4d{sub z{sup 2}} band of the NbS{sub 2} part of the structure, indicating electron transfer from the CeS part to the NbS{sub 2} part of the structure. The magnetic properties show down to 80 K a Curie Weiss behavior with a Curie constant close to that of CeS.

• OSTI ID: 6013099
• Journal Information: Journal of Solid State Chemistry; (USA), Vol. 89:2; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM SULFIDES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
MAGNETIC PROPERTIES
NIOBIUM SULFIDES
EXPERIMENTAL DATA
LATTICE PARAMETERS
MEASURING METHODS
ORTHORHOMBIC LATTICES
SPACE GROUPS
CERIUM COMPOUNDS
CHALCOGENIDES
CRYSTAL LATTICES
DATA
ELECTRICAL PROPERTIES
INFORMATION
NIOBIUM COMPOUNDS
NUMERICAL DATA
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360602* - Other Materials- Structure & Phase Studies
360603 - Materials- Properties