  Using plasma-enhanced chemical vapor deposition (PECVD) with Acetylene and
Ammoniac on Pd-specimens Carbon nanotubes (CNT) could be produced successfully.
Two different devices are compared and the conditions for best growth
conditions are explained. The detailed analysis of electron diffraction pattern
obtained by transmissions electron microscopy (TEM) of as-grown specimen showed
an expansion of the Pd lattice, which can be explained by the formation of
fcc-PdHx for x=0...1. For x=1..2 the first investigation of hexagonal -PdH2 is
reported, which lattice spacing is independent on the hydrogen content. The
amount of fcc-PdH and hcp-PdH2 increases when the specimens are treated
subsequently with Hydrogen. A growth model is provided.
