Photorefractive effect and photochromism in Fe-doped Pb(Zn/sub 1/3/Nb/sub 2/3/)O/sub 3/-PbTiO/sub 3/

Iron-doped Pb(Zn/sub 1/3/Nb/sub 2/3/)O/sub 3/-PbTiO/sub 3/ relaxor ferroelectric crystal was grown by the flux method. The photorefractive effect is investigated and a larger two-beam coupling gain coefficient is obtained. The photochromism is observed under the illumination of blue or green laser light.