Thin films are potentiodynamically generated on vanadium in Ba2+/acetate el
ectrolyte systems at high voltages. The influence of the anodic potential u
p to 400 V on the composition and structure of the about 500 nm thin anodic
conversion films are investigated. Raman spectroscopy indicates that diffe
rent film types depend on the electrochemical process parameters. The relat
ionship between the Raman laser excitation power and the amorphous or micro
crystalline film structure is also discussed. Beside metastable disordered
structures the films contain crystalline phases of V2O5, V4O9 and barium va
nadate, respectively.