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Preparation and characterization of manganese doped lead titanate films by sol-gel techniques

机译:溶胶 - 凝胶技术的制备与表征掺杂铅钛酸盐膜的方法

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In the present investigation, sol-gel method has been adopted to make manganese doped lead titanate (PT) films with perovskite structure by reacting liquid precursors to form a sol. The films were deposited on stainless steel substrate by multilayer spin coating using technique. The films were then annealed at temperatures close to 550/spl deg/C. The films were crack free and the ferroelectric behavior was established by studying their hysteresis loop measurements. Dielectric constant was found to be around 300 and coercive field was greater than 60 kv/cm for films with finer grain sizes. The films fired at 550/spl deg/C exhibited remanent polarization values close to 25 micro-coulomb/cm/sup 2/.
机译:在本发明的研究中,通过使液体前体反应形成溶胶,采用溶胶 - 凝胶法使锰掺杂钛酸锰(Pt)膜与钙钛矿结构制备。使用技术通过多层旋涂在不锈钢基板上沉积薄膜。然后将薄膜在接近550 / SPL DEG / C的温度下退火。薄膜是无裂缝,通过研究其滞后回路测量来建立铁电行为。发现介电常数约为300,并且对于具有更精细的晶粒尺寸的薄膜,矫顽场大于60kV / cm。在550 / SPL DEG / C烧制的薄膜表现出近25微型库仑/ cm / sup 2 /的倒置极化值。

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