X-ray diffraction study of domain reversal in relaxor Pb(Zn1/3Nb2/3)O3

The behavior of domain reversal in relaxer Pb(Zn1/3Nb2/3)O-3 single crystals was studied using X-ray diffraction measurements. After the electric field was switched instantaneously, the {222} Bragg reflection rapidly decreased and then gradually increased with time. These intensity variations of the Bragg reflection are associated with the reorientation of domains. The Kohlrausch law, exp[-(t/tau)(beta)], is applied to the time dependence of the reflection intensity. The variation of the intensity under the various magnitudes of electric field was measured, and the behavior of domains with respect to time was discussed.