We present a combined theoretical and experimental study of island nucleation growth in the deposition Co on Cu(001)-a prototype for understanding heteroepitaxial involving intermixing. Experimentally, ion scattering is employed. Using density-functional theory, we obtain energy barriers various elementary processes incorporate these into kinetic Monte Carlo program to simulate growth. Both simulations experiments show unique N-shape dependence density temperature that stems from interplay...

The structure and magnetism of ultrathin Fe films epitaxially grown on a Cu(001) surface are investigated by grazing scattering fast H He atoms or ions. By making use new variant ion beam triangulation based the detection number emitted electrons, we obtain direct information film surface. We observe for room temperature growth dominant defined fcc-like structure. Complex reconstructions as reported in recent STM LEED studies observed only cooling ${\mathrm{H}}_{2}$ dosing.

Long-standing experimental data on the elastic modulus of end-linked poly(dimethylsiloxane) (PDMS) networks are employed to corroborate validity Miller-Macosko theory (MMT). The MMT is also confirmed by molecular dynamics (MD) simulations that mimic experimentally realized networks. It becomes apparent for a network formed from bulk, where fractions loops small, it sufficient account topological details reference tree-like network, i.e., its degree completion, junction functionalities, and...

Total target currents for grazing scattering of keV protons from a crystal are used to investigate the structure surfaces and ultrathin films. This current shows pronounced maxima whenever azimuthal incidence angle coincides with close-packed rows atoms in surface subsurface layers. The real-space method is applied study monolayer bilayer films Mn CoMn epitaxially grown on Cu(001) surface.

The magnetization reversal of ultrathin Co films on Cu(001) has been investigated by grazing ion scattering and magneto-optical Kerr effect. Differences in the behavior surface bulk are found attributed to reduced coordination site symmetry at surface. depends chemical composition. For pure films, is preceded a complete magnetization. A particular magnetic state suggested as precursor for reversal.

We report on the first spin-resolved energy spectra for emission of electrons during grazing scattering 150 keV multicharged nitrogen ions from a magnetized Fe(001) surface. A substantial spin polarization KLL Auger emitted in final stage neutralization sequence interaction with metal surface is observed. conclude our data that projectile L shell dominantly populated by conduction band target. For low we find an increase their charge.

Recent developments in studies on the structure of surfaces based ion beam triangulation are discussed. We will outline recent experimental progress application this method, which is closely related to detection number emitted electrons per incident during scattering under surface channeling conditions. Key features pronounced change electron emission for projectile aligned along a low index crystallographic direction plane ('axial channeling') and interpretation data terms classical...

Abstract A key factor for a high electrical reliability of multilayer High Density Interconnection Printed Circuit Boards (HDI PCBs) is the thermomechanical stability stacked microvia interconnections. With decreasing via sizes and higher numbers interconnected layers, structural integrity these interconnections becomes critical topic interest in current research. The formation nanovoids inhibited Cu recrystallization across interfaces are two main indications weak link from target pad to...

The structural and magnetic properties of ${\mathrm{Fe}}_{x}{\mathrm{Mn}}_{100\ensuremath{-}x}$ single $\mathrm{Co}∕{\mathrm{Fe}}_{x}{\mathrm{Mn}}_{100\ensuremath{-}x}$ bilayers have been investigated by grazing ion scattering, Auger electron spectroscopy, low energy diffraction, magneto-optical Kerr effect. increase in coercivity the Co hysteresis loops is used as a measure interface coupling bilayers. For FeMn films 4 ML (monolayers), onset still detectable for temperatures below...

A key factor in achieving high electrical reliability multilayer HDI PCBs is the integrity of target pad - electroless Cu electrolytic interface (Cu/Cu/Cu-interface), especially stacked blind micro via interconnections (BMVs). In present paper it shown, that aside from a low density nanovoids, formation epitaxial Cu/Cu/Cu interfaces important satisfying highest requirements. Using example microstructures are typical to BMVs, post-plating and non-epitaxial described through concept mechanisms...

A molecular Kuhn-scale model is presented for the stress relaxation dynamics of entangled polymer networks. The governing equation given by general form linearized Langevin equation. Based on fluctuation–dissipation theorem, modulus derived using normal mode representation. entanglements are introduced as additional entropic springs connecting internal beads network strands. validity assessed comparing predicted and viscoelastic storage loss moduli with estimates from (MD) simulations, same...

${\mathrm{H}}^{+}$ and ${\mathrm{He}}^{+}$ ions with an energy of $25\phantom{\rule{0.3em}{0ex}}\mathrm{keV}$ are scattered under a grazing angle incidence from clean flat $\mathrm{Cu}(001)$ surface. For specific azimuthal orientations the crystal surface respect to low index directions in plane we observe ion induced emission electrons conventional $\mathrm{LEED}$ (low electron diffraction) setup. By operating instrument dispersive mode find intensity distributions emitted which can...

Ion beam triangulation is a real space technique to probe structures of surfaces and ultrathin films. In-plane arrangement surface atoms provided from enhanced kinetic electron emission yields for the transition planar axial channeling. The applied clean (001) fcc Cu bcc Fe as well films Mn Co, epitaxially grown on these at different temperatures.

Abstract Thin absorber films grown by the CuInS 2 ‐on‐Cu‐tape (CISCuT) method were studied Raman spectroscopy and deep‐level transient (DLTS). measurements revealed a degradation of crystalline quality growth CuAu fraction with increase Cu‐tape velocity through sulfur chamber, whereas DLTS – corresponding variations in magnitude dominating peak E1. The origin E1 was established from correlation results ascribed to defect states at interface between chalcopyrite phase.

${\mathrm{H}}^{+}$, ${\mathrm{He}}^{+}$, and ${\mathrm{N}}^{+}$ ions with energy of $25\phantom{\rule{0.3em}{0ex}}\mathrm{keV}$ are scattered under a grazing angle incidence from clean flat Cu(001) surface during deposition ultrathin Co films. Making use the ion-induced emission electrons allows us to monitor growth thin films via simple measurements target current or spectra emitted electrons. The method provides excellent signals is also applicable in regime poor layer growth.