Gigahertz dielectric polarization of substitutional single niobium atoms in defective graphitic layers

We synthesize two Nb/C composites with an order of magnitude difference in the density of single niobium atoms substituted into defective graphitic layers. The concentration and sites of single Nb atoms are identified using aberration-corrected scanning transmission electron microscopy and density functional theory.

Published in

Physical Review Letters

Authored by

Zhang, X.; Guo, J.; Guan, P.; Qin, G.; Pennycook, S. J.

Publication date

Thursday, October 1, 2015
Resource category
Technique category