(110)-Textured Ca-doped BiFeO3 film on refined Pt(111) electrode layer on glass substrate at reduced temperature

Multiferroic and photovoltaic properties of polycrystalline Bi0.85Ca0.15FeO3 (BCFO) film on refined Pt(111) electrode buffered glass substrate have been studied. Optimized Pt(111) electrode layer having large grain size and smooth morphology enables the development of highly (110)-textured BCFO film at a temperature as low as 450 °C. The prepared BCFO film has dense microstructure, fine grain size, and smooth surface morphology. Good ferroelectric properties with the remanent polarization (2Pr) of 108 μC/cm2 and electrical coercive field of 405 kV/cm are achieved. Improved ferromagnetic properties with magnetization of 9.2 emu/cm3 and coercivity of 1250 Oe are also attained. Significant PV properties with open-circuit photovoltage of 0.49 V and the short-circuit photocurrent of 67.4 μA/cm2 at illumination intensity of 228 mW/cm2 are observed, which are comparable to BCFO ceramics or BFO epitaxial films.