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(a) Room temperature thickness dependence of (∎) and (▴) lattice parameters for PZT thin films. The continuous lines are guides for the eyes, while the dashed lines are the bulk values. (b) Room temperature in-plane film-substrate separation vs inverse of the thickness. The line is a fit to the data for strain relaxation via misfit dislocations.
(Color online) (a) Rocking curves ( scans) around the (001) reflection for the Nb-STO substrate and PZT films of different thicknesses. (b) Reciprocal space map around the (103) reflection of a PZT thick film and Nb-STO substrate. The alignment of the peaks along demonstrates the coherent growth of the PZT film on the Nb-STO substrate.
(Color online) (a) Evolution of the lattice parameter for the Nb-STO substrate (∎) and of the [▴ measured from (103) reflection and ⋆ measured from (001) reflection] and [● from (103) reflection] lattice parameters of a thick PZT film with temperature. The structural phase transition occurs around . (b) Structural transition temperatures vs thickness for the different PZT thin films. The dashed line shows the bulk . (c) Intensity of scans around the (001) PZT reflection as a function of temperature for the thick film.
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