Materials Literature
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Traditionally, the lognormal distribution has been used to analyze electromigration (EM) failure data for both Al- and Cu-based interconnect technologies. However, from a statistical perspective, the lognormal distribution is found to be inappropriate for submicron interconnects because their resistance degradation pr…
By dynamic forging during Spark Plasma Sintering (SPS), grain-orientated ferroelectric Bi3.25La0.75Ti3O12 (BLT) ceramics were prepared. Their ferroelectric, piezoelectric, and dielectric properties are anisotropic. The textured ceramics parallel and perpendicular to the shear flow directions have similar thermal depol…
In this article, a fundamental model was postulated to capture the influences of microfabrication characteristics on the frictional behavior of pressure-driven liquid microflows through a detailed analysis of the underlined surface effects that effectively link up these two strongly correlated aspects. For theoretical…
The transport properties of as-deposited and rapid thermal annealed phosphorus-doped ZnO films grown by pulsed laser deposition are reported. As-grown ZnO:P samples showed n-type characteristics, presumably due to the formation of antisite PZn defects. Rapid thermal annealing yielded a carrier-type conversion from n-…
We have addressed two issues concerning the relative stabilities of various orienta- tions of interstitial clusters in iron by making a comprehensive comparison between four recent empirical potentials. First, we have investigated the effect of finite temperature on the com- petition between clusters made of a few dum…
Zn 1 − x Mn x O nanoparticles synthesized by a combustion method with Mn concentration x up to 0.40 are carefully characterized by means of x-ray powder diffraction and high resolution transmission electron microscopy. Single-phase solid solution Zn1−xMnxO is achieved with a solubility limit of ∼30 at. % Mn. An almost…
Identifying and understanding the vibrational frequency shifts caused by electron addition to metal phthalocyanine (MPc) molecules is the main goal of the present work. Among other things, it should be useful in establishing the amount of charge-transfer level recently reported in potassium doped solid MPc films. Choo…
Pulsed laser deposition (PLD) of a sintered boron carbide (B4C) target has been used for depositing crystalline thin films on room-temperature substrates of (100) oriented silicon surfaces. Deposition was accomplished by positioning the substrates parallel (on-axis geometry) to a rotating target or perpendicular (off-…
Nanosized ZnO films were prepared by sol-gel process on quartz substrates. The effects of sol concentration and annealing temperature on the surface morphology, microstructure and optical properties of the films were investigated. The results show that the sols remain stable and usable for spin-coating within 7 d. The…
The incorporation of organic moieties into siliceous frameworks leads to a wide variety of adsorbate-adsorbent interactions including weak van-der-Waal attractions as well as strong interactions such as Coulomb forces. Depending on the desired properties of such substituted highly porous matrix materials, optimized sy…
In this paper we highlight the existence of tensile stress in heavily arsenic-doped epitaxial silicon (Si:As) prepared by low pressure chemical vapor deposition. Despite the large size of As atoms compared to Si ones, we demonstrate with x-ray diffraction and convergent electron beam diffraction that the heavily doped…
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Epitaxial PbTiO3 thin films were grown on SrTiO3(001) and DyScO3(110) substrates by pulsed laser deposition. We used high-resolution transmission electron microscopy to investigate the 90° domain structure in the films. They were found to have a predominant fraction of c domains along with a certain minor volume fract…
In this work, ${\mathrm{Fe}}_{100\ensuremath{-}x}{\mathrm{Pd}}_{x}$ films with $x=43,\dots{},22$, deposited on MgO(100) at room temperature using pulsed laser deposition, are examined. The films growth texture, crystal structure, and microstructure are analyzed in detail using x-ray diffraction methods. The specifics…
Quinoxalino[2,3-b']porphyrins are pi-expanded porphyrins, having a quinoxaline fused to a beta,beta'-pyrrolic position of the porphyrin. They are used as components in systems proposed as 'molecular wires'. Knowledge of their redox properties is of value in the design of electron- or hole-conduction systems. In partic…
Thin films of the silver indium sulfide (AgIn 5 S 8 ) ternary semiconductor were prepared from acidic aqueous solutions containing silver nitrate, indium nitrate, and thioacetamide. Various preparative parameters, such as pH of the precursor solution, silver to indium concentration ratio [Ag]/[In], and postreaction th…
A series of high-spin thiolatonickel(II) complexes, [PhTttBu]Ni(SR) (PhTttBu = phenyltris((tert-butylthio)methyl)borate; 2, R = triphenylmethyl; 3, R = pentafluorophenyl; 4, R = phenyl), were synthesized via the reaction of [PhTttBu]Ni(NO3) (1) with thiols (RSH) in the presence of triethylamine. The [PhTttBu]Ni(SR) pr…
We prepared two heterooligomeric arrays based on free base/metalloporphyrins at axial positions and a metalloid phthalocyanine as a basal scaffolding unit by using the axial-bonding capabilities as well as the known oxophilicity of dihydroxytin(IV) phthalocyanine. Both heterotrimers were completely characterized by el…
A uniform diamond nanocone array was formed by plasma etching of diamond film in a hot filament chemical vapor deposition (HFCVD) system. A surface amorphous carbon coating layer, which is formed during CH4/H2 plasma-etching process, was removed by Ar plasma in a reactive ion etching system. The hydrogenation of diamo…
We report the observation of superstructures associated with the oxygen 2p states in two prototypical manganites using x-ray diffraction at the oxygen K edge. In the stripe order system Bi0.31Ca0.69MnO3, hole-doped O states are orbitally ordered, at the same propagation vector as the Mn orbital ordering, but no oxygen…