A novel room-temperature method is described for the preparation of microcr
ystalline zirconia (ZrO2) in monoclinic form via a simple electrochemical t
echnique. Almost-epitaxial growth is observed, with crystal sizes in the ra
nge of 5-15 mu m, A tentative reaction scheme also is suggested, to elucida
te the underlying process that leads to the formation of the ZrO2 phase.