Domain inversion in an (001) section of flux-grown RbTiOAsO4 has been
produced by applying an electric field to a sample via liquid electrod
es. An x-ray anomalous scattering experiment has been used for charact
erization of the domain reversal. The variation of the diffraction ima
ges of inversion domains revealed via anomalous-scattering topography
clearly indicates that near-perfect inversion domains have been formed
by electric-field poling.