ISSN:
0009-2940
Keywords:
Copper niobium telluride
;
Layer compounds
;
Low-dimensional compounds
;
Electrical properties
;
Band structures
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Synthesis, Structure and Electronic Properties of Cu0.69NbTe2Cu0.69NbTe2 is obtained from the elements in a sealed quartz ampoule at 850°C. The structure of Cu0.69NbTe2 is related to the CdI2 type. The Cu atoms are disordered and situated in tetrahedral sites between the NbTe2 layers. The Nb atoms form zig-zag chains extending in one direction within the layers. This deformation of the Nb sublattice from trigonal symmetry is typical for CdI2 derivatives with formal electron counts close to d2 on the early transition metal. The magnetic susceptibility is temperature-independent between 4 K and 300 K (Pauli paramagnetism). Resistivity measurements confirm the metallic behavior of the compound. The crystal structure and the physical properties are in agreement with the results of tight-binding band-structure calculations.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19941270104
