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Epitaxially grown lanthanum-modified lead zirconate titanate (PLZT) thin films were deposited on r-cut sapphire substrates using a sol-gel method. The new deposition processes of methanol treatments brought high quality epitaxial growth of PLZT thin films. This film showed high electro-optic (EO) coefficients that were almost comparable to those of bulk PLZTs. We believe this advanced deposition technique...
Ferroelectric lead zirconium titanate (PZT) has been used in FeRAMs, which are expected to become common large capacity devices. We have extensively studied PZT thin films and their micro-processing. However, there are several problems of degradation by crystal defects at grain boundaries in thin films and surface damage by microfabrication. Self-assembled nanocrystals are useful for solving these...
La-doped lead zirconate titanate (PLZT) has been applied to electro-optic (E-O) devices. We grew epitaxial PLZT thin films on alpha-Al2O3(012) single crystalline substrates fabricated by the conventional and the new sol-gel process. From result of observation by spectrophotometer, refractive index n approximately equal, were unaffected by processes. However, the average oscillator strength was different.
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