A Y(1-X)Sm(x)Ba(2)Cu(3)O(y) (YSmBCO) superconductive layer containing BaZrO(3) (BZO) particles was fabricated on a Hastelloy substrate with a CeO(2)/Gd(2)Zr(2)O(7) buffer layer by trifluoroacetates-metal organic deposition. The nanostructures of the layer were characterized by transmission electron microscopy and found to be comparatively dense and predominantly composed of c-axis oriented grains. Some BaCeO(3) regions formed at the interface between the YSmBCO and the CeO(2) layers. BZO particles and the (Y,Sm)(2)Cu(2)O(5) (225) phase were formed in the YSmBCO. The average sizes of the BZO and the 225 phase particles were 20 and 150 nm, respectively, with random orientation. The BZO particles were found to be homogeneously distributed within the YSmBCO layer, which should enhance its superconducting behavior in high magnetic fields.