Influence of Bi Excess on Electrical Properties of Bi 3.25 + x La 0.75 Ti 3 O 12+ Thin Films
Abstract:The Bi-excess Bi 3.25+ x La 0.75 Ti 3 O 12+ (x = 0, 0.05, 0.10, 0.15, 0.20, BLT) thin films were prepared by pulsed laser deposition. Single phases of BLT thin films was confirmed by X-ray diffraction. For the small Bi-excess BLT films, ferroelectric properties are improved. One of them, 10 mol% Bi-excess BLT films exhibits high remanent polarization, low leakage current density, and improved switching polarization. Influence of Bi excess on ferroelectric and electrical properties are investigated by ferroelectric P-E hysteresis loops, transient current, and leakage current.
Document Type: Research Article
Publication date: 2005-01-01