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Pressure induced anisotropy of electrical conductivity in polycrystalline molybdenum disulfide
Sanchez, V.; Benavente, Eglantina; O'Dwyer, Colm; Lavayen, Vladimir; Santa-Ana, María A.; Sotomayor Torres, Clivia M.; Gonzalez, Guillermo
Anisotropic specimens of MoS2 are obtained by pressing the microcrystalline powder into special die. This inelastic compression results in a rearrangement of the disulfide micro platelets observed by atomic force microscopy and reflected in the macroscopic anisotropy in electrical conductivity in these samples. The conductivity measured parallel and perpendicular to the direction of applied pressure exhibits an anisotropy factor of 10 at 1 GPa. This behaviour of the conductivity as a function of applied pressure is explained as the result of the simultaneous influence of a rearrangement of the micro platelets in the solid and the change of the inter-grain distances.
Keyword(s): Molybdenum; Anisotropy; Conductivity; Surface pressure
Publication Date:
2006
Type: Journal article
Peer-Reviewed: Yes
Language(s): English
Institution: University College Cork
Funder(s): Science Foundation Ireland
Citation(s): Sánchez, V., Benavente, E., Lavayen, V., O’Dwyer, C., Sotomayor Torres, C. M., González, G. and Santa Ana, M. A. (2006) 'Pressure induced anisotropy of electrical conductivity in polycrystalline molybdenum disulfide', Applied Surface Science, 252(22), pp. 7941-7947.
Publisher(s): Elsevier
File Format(s): application/pdf
Related Link(s): http://www.sciencedirect.com/science/article/pii/S0169433205014753
First Indexed: 2013-02-27 05:34:11 Last Updated: 2018-06-15 06:39:09