Materials Literature
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Pb(Zr x Ti 1- x )O 3 (PZT) thin films were prepared on Ir/IrO 2 and Pt/IrO 2 electrodes. We have already reported that fatigue properties of PZT thin films were improved by using these electrodes due to barrier effects of IrO 2 . In this present paper we describe a study of the imprint characteristics of PZT thin film…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT13C NMR Determination of the Degree of Cocrystallization in Random Copolymers of Poly(.beta.-hydroxybutyrate-co-.beta.-hydroxyvalerate)David L. VanderHart, William J. Orts, and Robert H. MarchessaultCite this: Macromolecules 1995, 28, 19, 6394–6400Publication Date (Print):Se…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntramolecular Ferromagnetism in a Novel Hexanuclear (.mu.-Hydroxo)(.mu.-carbonato)copper(II) Bipyridine Complex. Structure of [Cu6(bpy)10(.mu.-CO3)2(.mu.-OH)2](ClO4)6.cntdot.4H2O and of a Dinuclear .mu.-Carbonato Complex [Cu2(bpy)4(.mu.-CO3)](PF6)2.cntdot.2DMFPaul E. Kruger…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSyntheses, Structures, and Properties of [Mn2(.mu.-O)2(.mu.-O2CCH3)(fac-bpea)2](ClO4)2 and Two Halide-Ligated Dioxo-Bridged Dimers Derived Therefrom: [Mn2(.mu.-O)2X2(mer-bpea)2](ClO4)2 (X = F, Cl)Samudranil Pal, Marilyn M. Olmstead, and William H. ArmstrongCite this: Inorg.…
We report the crystalline quality and electrical properties of PbZr x Ti 1- x O 3 (PZT) films grown on Si substrates with a SrTiO 3 (STO) buffer layer. STO buffer layers and PZT films were formed on Si substrates by the electron-beam assisted vacuum evaporation technique and the sol-gel technique, respectively. It is…
SrTiO 3 thin films are deposited on Pt/SiO 2 /Si substrates using RF magnetron sputtering in a temperature range from 200° C to 600° C. The film deposited at 600° C shows the best dielectric property and leakage current characteristics due to its good crystallinity and stoichiometric composition. Dielectric constant o…
Angle-dependent conduction-electron spin resonance and static magnetic-susceptibility measurements of bulk, aligned, and partially purified carbon nanotube films show anisotropies reflecting the anisotropic character of the tubes. The Pauli susceptibility (above 40 K) of the tubes corresponds to about ${10}^{18}$ spin…
We have developed the series of thin-film bismuth layer structured ferroelectric (BLSF) materials such as SrBi 2 Ta 2 O 9 , SrBi 2 Nb 2 O 9 , SrBi 4 Ti 4 O 15 and their solid solutions using metallo-organic-decomposition (MOD) spin-on coating techniques. We found that SrBi 2 Ta 2 O 9 is one of the best potential candi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Silicon-Based Linker for Traceless Solid-Phase SynthesisMatthew J. Plunkett and Jonathan A. EllmanCite this: J. Org. Chem. 1995, 60, 19, 6006–6007Publication Date (Print):September 1, 1995Publication History Published online1 May 2002Published inissue 1 September 1995https…
Abstract The local structure of CH 3 NH 3 I around the I - ion in Phase α' and δ was studied by iodine K-edge EXAFS. The crystal structure in Phase α' was redetermined by single crystal X-ray diffraction. The Debye-Waller factor σ (2) derived from EXAFS spectra shows an anomalous behavior around the order-disorder tra…
The composite containment proposed aims to cope with beyond-design-basis accidents. The goal is to restrict the consequences of severe core meltdown accidents to the reactor plant. One essential of this new concept is passive decay heat removal from the containment by natural air convection.Experimental and calculatio…
Abstract This investigation focused on the study of dynamic mechanical losses in silica-filled networks of poly(dimethylsiloxane) (PDMS). Some of the samples were filled using a novel method, specifically the in situ precipitation of particulate silica either after or during network formation. Others were filled using…
Superplasticity of Ti-6Al-4V alloy specimens prepared by various routes of thermomechanical processing was evaluated by high temperature tensile tests. It was found that, to maximize superplasticity, the material should first be solution treated at 1050 °C and quenched into water to obtain needle-like a' martensite, a…
The rolling‐contact fatigue life and wear of CVD‐SiC coatings with surface compression were studied using a three‐ ball‐on‐rod rolling‐contact fatigue (RCF) tester. Two levels of surface compression in the coatings, approximately 190 μm thick, were introduced by using substrates of a liquid‐phase sintered SiC and a Si…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMethane Oxidative Coupling: Technical and Economic Evaluation of a Chemical Cogenerative Fuel CellDouglas Eng, Po-Hung Chiang, and Michael StoukidesCite this: Energy Fuels 1995, 9, 5, 794–801Publication Date (Print):September 1, 1995Publication History Published online1 May…
Abstract This paper reviews three flexible PVC formulations using various types of alumina trihydrate (ATH) and magnesium hydroxide [Mg(OH) 2 ]. Smoke values are compared. In two of the formulations, Mg(OH) 2 has better smoke values than ATH; in a third formulation, ATH has better smoke values than Mg(OH) 2 . However,…
Abstract 3‐Methyl‐1,3‐pentadiene has been polymerized with the Al(C 2 H 5 ) 2 Cl/Nd(OCOC 7 H 15 ) 3 /Al[CH 2 CH(CH 3 ) 2 ] 3 system to crystalline polymers consisting essentially of cis‐1,4 units (≥80%). NMR examination has shown that the polymers have an isotactic structure. This conclusion was confirmed by X‐ray ana…
The Fr\'eedericksz transition is a nonuniaxial, nonchiral nematic liquid crystal (LC) in the presence of the electric E field is considered using the Curie symmetry principle. All possible symmetries of (i) the LC point symmetry group ${\mathit{G}}_{\mathit{N}}$, (ii) the strong boundary LC orientation at the infinite…
An approach to quantitative evaluation of surface plasmon resonance (SPR) measurements is given. In order to determine thicknesses and refractive indices, measured SPR curves were fitted numerically with a theoretical model based on the Fresnel equations. The model also takes into account additional roughness layers,…
The morphology of (0112) twins studied in Zn is described as well as interfacial defects. Twin boundaries are usually made up of three types of interface: straight parts parallel to the K1 (0112) composition plane, growing parts involving a series of geometrically well defined steps separated by (0112) boundary portio…