Author： Zeng Hui-zhong
Publisher： Springer Publishing Company
ISSN： 1385-3449
Source： Journal of Electroceramics, Vol.15, Iss.2, 2005-11, pp. : 135-141
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Abstract
Nanoscale switching of the lamellar 90∘ domains ({a-a} domains) of PbTiO3 grains in the surface of sol-gel-derived PbTiO3/Pb(Zr0.58Ti0.42)O3/PbTiO3 thin films is studied by three-dimensional piezoresponse force microscopy. It is demonstrated that the lamellar domain pattern in the PbTiO3 grains can be rotated 90∘ in the plane of film by the electric field at the tip. It is found that the rotation of lamellar domain pattern involves transverse growth of the existing embedded a-a domain nucleus, whose domain walls are perpendicular to the surrounding ones. During the transverse growth, the existing 90∘ domains extend along length direction and penetrate into neighboring domain walls, while formation of new 90∘ domain walls was mediated by the nanoscale 45∘ tilted spike domains.
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