Kinetically-controlled thin-film growth of layered $\beta$- and $\gamma -$Na${}_x$CoO${}_2$ cobaltate

J. Y. Son, Bog G. Kim, J. H. Cho

We report growth characteristics of epitaxial $\beta$-Na${}_{0.6}$CoO${}_2$ and $\gamma$-Na${}_{0.7}$CoO${}_2$ thin films on (001) sapphire substrates grown by pulsed-laser deposition. Reductio…