Composition spread Mn-doped Ba0.6Sr0.4Ti1-xMnxO3 (BSTMx, 0 ≤x ≤ 0.05) thin films were prepared on La0.7Sr0.3MnO3/SrTiO3 (LSMO/STO) layer by combinatorial pulsed laser deposition. When x is less than 3.3%, the BSTMx are single phase according to X-ray diffraction data, and Au/BSTMx/LSMO structure presents asymmetric transport properties. The asymmetry of property gets weak with increasing Mn dop...