January 2008, to be published in Physical Review B1


Pressure-induced amorphization and decomposition of Fe[Co(CN)$_6$]
J. Catafesta, J. Haines, J. E. Zorzi, A. S. Pereira, and C. A. Perottoni

The high-pressure behavior of the Prussian Blue analoge Fe[Co(CN)$_6$] has been explored by energy- and angle-dispersive x-ray diffraction, Fourier transform infrared and Raman spectroscopy. This cyanide-bridged framework material becomes x-ray amorphous above 10 GPa and the high-pressure form is retained upon pressure release. Samples recovered from around 17 GPa exhibit a dark, metallic luster and their Raman spectra are characteristic of amorphous CN$_{x}$ films. These observations constitute strong evidence that Fe[Co(CN)$_6$] decomposes at high pressures.

© 2008 The American Physical Society.