scholarly journals Structural and bonding characteristics of Ga-containing polar intermetallics

2018 ◽  
Author(s):  
Asa Toombs
Keyword(s):  
Polar Intermetallics ◽  
Bonding Characteristics

Chemically driven surface effects in polar intermetallic topological insulators A3Bi

2018 ◽  
Vol 20 (41) ◽  
pp. 26372-26385 ◽  
Author(s):  
I. P. Rusinov ◽  
P. Golub ◽  
I. Yu. Sklyadneva ◽  
A. Isaeva ◽  
T. V. Menshchikova ◽  
...  
Keyword(s):  
Alkali Metal ◽  
General Formula ◽  
Chemical Bonding ◽  
Electronic Spectra ◽  
Topological Insulators ◽  
Surface Effects ◽  
Bulk Properties ◽  
Polar Intermetallics ◽  
Bonding Characteristics ◽  
Bonding Patterns

Surface electronic spectra, surface and bulk properties as well as the underlying chemical bonding characteristics in topological insulators with complex bonding patterns are considered for the example of cubic, polar intermetallics KNa2Bi, K3Bi and Rb3Bi (with the general formula A3Bi, A – alkali metal).

Site preference and atomic ordering in the ternary Rh5Ga2As: first-principles calculations

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Nilanjan Roy ◽  
Sucharita Giri ◽  
Harshit ◽  
Partha P. Jana
Keyword(s):  
Total Energy ◽  
First Principles ◽  
Density Functional ◽  
Structure Type ◽  
Site Preference ◽  
X Ray Diffraction ◽  
Atomic Ordering ◽  
Functional Theory ◽  
The Stability ◽  
Bonding Characteristics

Abstract The site preference and atomic ordering of the ternary Rh5Ga2As have been investigated using first-principles density functional theory (DFT). An interesting atomic ordering of two neighboring elements Ga and As reported in the structure of Rh5Ga2As by X-ray diffraction data only is confirmed by first-principles total-energy calculations. The previously reported experimental model with Ga/As ordering is indeed the most stable in the structure of Rh5Ga2As. The calculation detected that there is an obvious trend concerning the influence of the heteroatomic Rh–Ga/As contacts on the calculated total energy. Interestingly, the orderly distribution of As and Ga that is found in the binary GaAs (Zinc-blende structure type), retained to ternary Rh5Ga2As. The density of states (DOS) and Crystal Orbital Hamiltonian Population (COHP) are calculated to enlighten the stability and bonding characteristics in the structure of Rh5Ga2As. The bonding analysis also confirms that Rh–Ga/As short contacts are the major driving force towards the overall stability of the compound.

Examination of structural models and bonding characteristics of coals

Fuel ◽  
2016 ◽  
Vol 184 ◽  
pp. 799-807 ◽  
Author(s):  
Bin Zhou ◽  
Lei Shi ◽  
Qingya Liu ◽  
Zhenyu Liu
Keyword(s):  
Structural Models ◽  
Bonding Characteristics

scholarly journals Polar Intermetallics Pr5Co2Ge3and Pr7Co2Ge4with Planar Hydrocarbon-Like Metal Clusters

2017 ◽  
Vol 23 (44) ◽  
pp. 10516-10521 ◽  
Author(s):  
Qisheng Lin ◽  
Kaiser Aguirre ◽  
Scott M. Saunders ◽  
Timothy A. Hackett ◽  
Yong Liu ◽  
...  
Keyword(s):  
Metal Clusters ◽  
Polar Intermetallics

Microscopic Study of Smooth Silver-plated Retention Pins in Amalgam

1980 ◽  
Vol 59 (2) ◽  
pp. 124-128 ◽  
Author(s):  
Y. Galindo ◽  
K. McLachlan ◽  
Z. Kasloff
Keyword(s):  
Stainless Steel ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Microscopic Study ◽  
Strong Evidence ◽  
Mechanical Performance ◽  
Silver Layer ◽  
Mechanical Bonding ◽  
Bonding Characteristics ◽  
Scanning Electron

A silver-plating technique was developed in an effort to produce good mechanical bonding characteristics between stainless steelpins and amalgam. Metallographic microscope and scanning electron microscope (SEM) studies were made to assess the presence, or otherwise, of such a bond between (a) the silver layer plating and the surface of the stainless steel pins, and (b) and silver plating and the amalgam. Unplated stainless steel and sterling silver pins were used as a control and as a comparison, respectively. A "rubbing" technique of condensation was devised to closely adapt amalgam to the pins. It is concluded that there is strong evidence for the existence of a good bond between the plated pins and amalgam. The mechanical performance of the bond is discussed elsewhere. 1.

Cement Bonding Characteristics in Gas Wells

1989 ◽  
Vol 41 (11) ◽  
pp. 1146-1153 ◽  
Author(s):  
Roy S. Marlow
Keyword(s):  
Gas Wells ◽  
Bonding Characteristics
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