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Effect of Ca substitution on the multiferroic properties of non-epitaxially grown polycrystalline Bi 1− x Ca x FeO 3 (BCFO) films on refined Pt(1 1 1) electrode buffered glass substrates is studied. The structural analysis shows that a pure perovskite phase with isotropic orientation is present for BCFO films ( x = 0.05–0.15). The grain size and surface roughness are reduced with increasing x . Different from the BCFO ceramics, good ferroelectric properties with the remanent polarization (2 P r ) of 91–124 μC/cm 2 and electrical coercive field ( E c ) of 294–394 kV/cm are obtained in BCFO polycrystalline thin films. Furthermore, the substitution of Ca 2+ for Bi 3+ effectively enhance the ferromagnetic properties with magnetization ( M s ) of 5.9–8.2 emu/cm 3 and coercivity ( H c ) of 1224–1258 Oe. The ferromagnetic and ferroelectric properties and leakage behavior as functions of Ca content x are discussed. [ABSTRACT FROM AUTHOR]