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Zr k-edge EXAFS study of PZT thin film formation from sols

We examined the local environment of zirconium atoms in the Pb(Zr0.53Ti0.47)O3 (PZT) sol, prepared from lead acetate and transition metal n-propoxides in 2-methoxyethanol, and in the as-pyrolyzed amorphous film deposited on (0001) sapphire. The immediate neighborhood of Zr atoms changes markedly upon transition from the sol to the amorphous film. Clustering of Zr species in the process of film formation in the form of Zr oxide nanoparticles is indicated.