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22 May 1995 Epitaxial Pb(ZrxTi1-x)O3/SrRuO3 (x=0,0.35,0.65) multilayer thin films on SrTiO3(100) and MgO(100) prepared by MOCVD and rf sputtering
Christopher M. Foster, Roseann Csencsits, Peter M. Baldo, Guo-Ren Bai, Li Zhuang, Lynn E. Rehn, L. A. Wills-Mirkarimi, Ron R. Hiskes
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Proceedings Volume 2441, Smart Structures and Materials 1995: Smart Materials; (1995) https://doi.org/10.1117/12.209806
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States
Abstract
Epitaxial SrRuO3 thin films were deposited on SrTiO3(100) and MgO(100) substrates by rf sputtering for use as bottom electrodes and epitaxial buffer layers. On these conductive substrates, epitaxial Pb(ZrxTi1-x)O3 (PZT; x equals 0.35, 0.65) and PbTiO3 (PT; x equals 0) thin films were deposited by metalorganic chemical vapor deposition (MOCVD). X-ray diffraction (XRD), RBS channeling (RBS), transmission electron microscopy (TEM) and optical waveguiding were used to characterize the phase, microstructure, defect structure, refractive index, and film thickness of the deposited films. The PZT and PT films were epitaxial and c-axis oriented. Ninety degree domains, interfacial misfit dislocations and threading dislocations were the primary structural defects, and the films showed as high as 70% RBS channeling reduction. Ferroelectric hysteresis and dielectric measurements of epitaxial PZT ferroelectric capacitor structures formed using evaporated Ag top electrode showed: a remanent polarization of 46.2 (mu) C/cm2, a coercive field of 54.9 kV/cm, a dielectric constant of 410, a bipolar resistivity of approximately 5.8 X 109 (Omega) -cm at a field of 275 kV/cm, and a breakdown strength of > 400 kV/cm. Cyclic fatigue measurements showed that the remanent polarization was maintained for > 109 cycles.
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Christopher M. Foster, Roseann Csencsits, Peter M. Baldo, Guo-Ren Bai, Li Zhuang, Lynn E. Rehn, L. A. Wills-Mirkarimi, and Ron R. Hiskes "Epitaxial Pb(ZrxTi1-x)O3/SrRuO3 (x=0,0.35,0.65) multilayer thin films on SrTiO3(100) and MgO(100) prepared by MOCVD and rf sputtering", Proc. SPIE 2441, Smart Structures and Materials 1995: Smart Materials, (22 May 1995); https://doi.org/10.1117/12.209806
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KEYWORDS
Thin films
Ferroelectric materials
Reflection
Metalorganic chemical vapor deposition
Sputter deposition
Thin film deposition
Crystals
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