Structure in Rb8Ga5H15 and [GaH2]nn– with a Polyethylene Structure in Rbn(GaH2)n, Represent a New Class of Compounds with Direct Ga–Ga Bonds Mimicking Common Hydrocarbons 来自 EBSCO 喜欢 0 阅读量: 24 作者:Henrik,Fahlquist,Dag,Noréus,Samantha,Callear,William,I.,F.,David,Bjo...
LatticehexagonalWe report the structure and physical properties of two newly discovered compounds AV_(8)Sb_(12)and AV_(6)Sb_(6)(A=Cs,Rb),which have C_(2)(space group:Cmmm)and C_(3)(space group:R3 m)symmetry,respectively.The basic Vkagome unit appears in both compounds,but stacking ...
In this topical review, we focus on the exchange mechanism in transition-metal compounds and establish kinetic-energy-driven two-sublattice double-exchange as a general mechanism of exchange, in addition to well-known mechanisms like superexchange and double exchange. This mechanism, which was first...
Examples of geometric frustration include antiferromagnetic materials based on a triangular lattice or a Kagome lattice on which triangles share their corners rather than edges. For a perfect system, this frustration would result in the ground state being inherently highly degenerate, even a spin ...
Fig. 9. Examples of two kinds of relative permeability curves, the Corey-curves and the so-called X-curves (Bödvarsson and Witherspoon, 1989). By using the concept of relative permeability the following equation can be used to define the mass-flow in two-phase geothermal systems, here pre...
The thickness of ~1.7 nm corresponding to one unit cell along the [111] direction can be determined. Scale bar: 2 μm. g Cross-sectional HAADF-STEM image of 1-unit-cell CFO nanosheet, which shows an expanded out-of-plane lattice (~0.54 nm) in the bottom subcell. Scale bar:...
28,47 All of these studies indicate that a structure-searching procedure must be used to determine the realistic Li storage capacity of a 2D material. These procedures are extremely expensive computationally as they often involve hundreds of large-supercell lattice optimizations for a single material ...
[18]which could lead to stronger, lighter batteries with greater power densities and faster charging times. 2D MoS2has also received a lot of attention as a possible electrode. While it is semiconducting in its most stable 2H crystal structure, it can be prepared in such a way (usually by ...
of lattice provides sufficient space for carbon chains to undergo dramatic conformation disordering, which induces colossal entropy change with large pressure-sensitivity and small hysteresis. MD simulation elucidated the specific disordering process from perspective of radial distribution function g(r) and...
A great variety of tight binding models were used to describe Weyl (Dirac) semimetals in 2D. Historically the first was graphene (type I,[Math Processing Error]κ=0) , in which electrons hope between the neighboring cites of the honeycomb lattice. Two Dirac cones appear atKand[Math Processing...