Results 71 to 80 of about 47,062 (224)

Structural properties of carbon composites doped with boron

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы, 2020
The article considers morphology, chemical and phase composition of composite boro-carbon coatings, received by ion-plasma synthesis, depending on the boron content.
Д.Г. Пилипцов   +7 more
doaj   +1 more source

Thermally activated reorientation of di-interstitial defects in silicon

open access: yes, 1999
We propose a di-interstitial model for the P6 center commonly observed in ion implanted silicon. The di-interstitial structure and transition paths between different defect orientations can explain the thermally activated transition of the P6 center from
D. J. Eaglesham   +19 more
core   +1 more source

On Electron Transport in ZrB12, ZrB2 and MgB2 [PDF]

open access: yes, 2004
We report on measurements of the temperature dependence of resistivity, $\rho(T)$, for single crystal samples of ZrB$_{12}$, ZrB$_{2}$ and polycrystalline samples of MgB$_{2}$.
A. Junod   +19 more
core   +1 more source

Chalcogen Bonding due to the Exo-Substitution of Icosahedral Dicarbaborane

open access: yesMolecules, 2019
Chalcogen atoms are a class of substituents capable of generating inner and outer derivatives of boron clusters. It is well known that chalcogenated boron clusters can form strong σ-hole interactions when a chalcogen atom is a part of an icosahedron.
Jindřich Fanfrlík   +2 more
doaj   +1 more source

Are hemispherical caps of boron-nitride nanotubes possible?

open access: yes, 2004
We report all-electron, density-functional calculations with large Gaussian polarization basis set of the recently synthesized octahedral B24N24 cage that is perfectly round by symmetry, and boron-nitride (BN) clusters that its existence might suggest ...
Andzelm   +34 more
core   +1 more source

Remarkable Hydrogen Storage on Beryllium Oxide Clusters: First Principles Calculations

open access: yes, 2016
Since the current transportation sector is the largest consumer of oil, and subsequently responsible for major air pollutants, it is inevitable to use alternative renewable sources of energies for vehicular applications. The hydrogen energy seems to be a
Shinde, Ravindra, Tayade, Meenakshi
core   +2 more sources

Constricted Boron Nanotubes

open access: yes, 2004
The recent discovery of pure boron nanotubes raises questions about their detailed atomic structure. Previous simulations predicted tubular structures with smooth or puckered surfaces. Here, we present some novel results based on ab initio simulations of
Alexander Quandt   +32 more
core   +1 more source

Different shapes of impurity concentration profiles formed by long-range interstitial migration

open access: yes, 2015
A model of interstitial impurity migration is proposed which explains the redistribution of ion-implanted boron in low-temperature annealing of nonamorphized silicon layers.
Velichko, O. I.
core   +3 more sources

Boron Clusters Come of Age [PDF]

open access: yesJournal of Chemical Education, 2004
Polyhedral clusters containing boron, alone or in combination with other elements, have been known for nearly a century, and intensive studies of their structures, bonding, and reactivity have been...
openaire   +1 more source

Boron Clusters as Highly Stable Magnesium‐Battery Electrolytes [PDF]

open access: yesAngewandte Chemie, 2014
AbstractBoron clusters are proposed as a new concept for the design of magnesium‐battery electrolytes that are magnesium‐battery‐compatible, highly stable, and noncorrosive. A novel carborane‐based electrolyte incorporating an unprecedented magnesium‐centered complex anion is reported and shown to perform well as a magnesium‐battery electrolyte.
Carter, Tyler J.   +6 more
openaire   +5 more sources

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