Thin films of La(0.7)Ca(0.3)MnO(3) (LCMO) have been grown epitaxially on (001) single-crystal substrates of (LaAlO(3))(0.3)-(SrAlTaO(6))(0.7) by metalorganic deposition. The microstructures of the LCMO films were investigated by transmission electron microscopy (TEM) on cross-sections. High-resolution TEM observations demonstrated a good quality of epitaxy throughout the entire film thickness. For bolometric application, we calculated the temperature coefficients of resistance (TCR) from the temperature dependence of the resistance. Large value of TCR of approximately 22% at 250 K was obtained for the 80 rim thick film. (c) 2008 Elsevier B.V. All rights reserved.