Dual structures in (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 ferroelectric relaxors

Guangyong Xu; Hiraka, H.; Shirane, G.; Ohwada, K.
May 2004
Applied Physics Letters;5/17/2004, Vol. 84 Issue 20, p3975
Academic Journal
We performed x-ray diffraction studies on a series of (1-x)Pb(Zn⅓Nb2/3)O3-xPbTiO3 single crystals with different incident photon energies, and therefore different penetration depths. Our results show that outer layers of ∼10-50 µm thick are present in all samples. The structure of those outer layers is different from that of the inside of the crystals, by having much greater (rhombohedral) distortions. With increasing x, rhombohedral-type lattice distortions develop, both in the outer layer and on the inside.


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