Microcrystal BiFeO3 films have been prepared on Nb doped SrTiO3 substrate with the hydrothermal method. The microcrystals in the film are highly textured and c-oriented with the (101)/(011) planes as their preferential side growth facets. These crystal facets intersect the film plane along either x or y direction. Microscopic domain structures are studied by combining the information of both in-plane and out-of-plane piezoresponse microscopy (PFM) measurements. Both 71 degrees and 109 degrees domain walls have been observed. Ordered stripe domains are found in the valley areas between two adjacent grains, which are ascribed to the compressive strain exerted during growth by the neighboring grains. (C) 2012 Elsevier B.V. All rights reserved.