ChemInform Abstract: Syntheses, Structures, Physical Properties, and Electronic Properties of Some AMUQ3Compounds (A: Alkali Metal, M: Cu or Ag, Q: S or Se).

ChemInform ◽  
2008 ◽  
Vol 39 (45) ◽  
Author(s):  
Jiyong Yao ◽  
Daniel M. Wells ◽  
George H. Chan ◽  
Hui-Yi Zeng ◽  
Donald E. Ellis ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Physical Properties ◽  
Electronic Properties

Syntheses, Structures, Physical Properties, and Electronic Properties of Some AMUQ3Compounds (A = Alkali Metal, M = Cu or Ag, Q = S or Se)

2008 ◽  
Vol 47 (15) ◽  
pp. 6873-6879 ◽  
Author(s):  
Jiyong Yao ◽  
Daniel M. Wells ◽  
George H. Chan ◽  
Hui-Yi Zeng ◽  
Donald E. Ellis ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Physical Properties ◽  
Electronic Properties

Electronic Properties of Alkali-Metal-Hydrogen-Graphite Intercalation Compounds*

1992 ◽  
Vol 1 (1) ◽  
pp. 609-616
Author(s):  
Toshiaki Enoki ◽  
Kazuhiko Shindo ◽  
Noriaki Sakamoto ◽  
Keisuke Nakazawa ◽  
Kazuya Suzuki ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Electronic Properties ◽  
Intercalation Compounds ◽  
Graphite Intercalation Compounds ◽  
Graphite Intercalation

scholarly journals Strong correlation between electronic bonding network and critical temperature in hydrogen-based superconductors

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Francesco Belli ◽  
Trinidad Novoa ◽  
J. Contreras-García ◽  
Ion Errea
Keyword(s):  
Critical Temperature ◽  
Physical Properties ◽  
Fermi Level ◽  
Electronic Properties ◽  
Density Of States ◽  
Strong Correlation ◽  
Critical Temperatures ◽  
Structural And Electronic Properties ◽  
Superconducting Compounds ◽  
Better Than

AbstractBy analyzing structural and electronic properties of more than a hundred predicted hydrogen-based superconductors, we determine that the capacity of creating an electronic bonding network between localized units is key to enhance the critical temperature in hydrogen-based superconductors. We define a magnitude named as the networking value, which correlates with the predicted critical temperature better than any other descriptor analyzed thus far. By classifying the studied compounds according to their bonding nature, we observe that such correlation is bonding-type independent, showing a broad scope and generality. Furthermore, combining the networking value with the hydrogen fraction in the system and the hydrogen contribution to the density of states at the Fermi level, we can predict the critical temperature of hydrogen-based compounds with an accuracy of about 60 K. Such correlation is useful to screen new superconducting compounds and offers a deeper understating of the chemical and physical properties of hydrogen-based superconductors, while setting clear paths for chemically engineering their critical temperatures.

A Convenient Preparation of Anhydrous Alkali Metal Thiocarboxylates

1983 ◽  
Vol 38 (12) ◽  
pp. 1585-1590 ◽  
Author(s):  
Shinzi Kato ◽  
Motohiro Oguri ◽  
Masaru Ishida
Keyword(s):  
Alkali Metal ◽  
Physical Properties ◽  
Metal Hydrides ◽  
High Yields ◽  
Convenient Preparation

A series of alkali metal thiocarboxylates (1-5) were found to be readily obtained in high yields by the reaction of thiocarboxylic acids with metal hydrides (LiH, NaH, KH), and rubidium or caesium acetates, respectively. Their physical properties were disclosed

Radiothermal radiation method for aqueous solutions

2021 ◽  
Author(s):  
L.A. Morozova ◽  
S.V. Savel’ev
Keyword(s):  
Dielectric Properties ◽  
Alkali Metal ◽  
Thermal Radiation ◽  
Aqueous Solutions ◽  
Physical Properties ◽  
Dielectric Constants ◽  
Water Molecules ◽  
Absorption Coefficients ◽  
Basic Substance ◽  
High Dilutions

For the first time, an ultra-high-sensitivity method for measuring radio-thermal radiation was developed and used in practice in order to establish the difference in the physical properties of aqueous solutions of substances in the millimeter region of the spectrum. The method is used to study the dynamics of the dielectric properties of aqueous solutions depending on the composition of the base substance and its concentration. The dynamics of dielectric properties establishes a one-to-one correspondence between the number and concentration of ions of the dissolved basic substance contained in water and the number of water molecules involved in cooperative interaction, which gives a consistent microscopic picture of ion-water cooperative interactions in the studied aqueous solutions of K2SO4 and Cs2SO4. The density of water molecules perturbed by the ions of the base substance contained in the hydration shell at normal concentrations is proportional to the number of ions, while the transition to weaker solutions leads to the creation of multilayer hydration shells. This means that the number of perturbed water molecules, depending on the number of ions, increases according to a law different from linear. In accordance with the experimental data, the values of the absorption coefficients of aqueous solutions were determined in a wide range of concentrations for alkali metal sulfates. It is noted that alkali metal sulfates have physical properties that generalize the dynamics of dielectric constants depending on the concentration of the base substance. A monotonic increase in the values of the absorption coefficients of solutions with a decrease in the concentration of basic substances in the region of high dilutions was established with individual dynamics for each basic substance, reflecting the total hydration changes in salt solutions. Research has shown that the proposed method for measuring radio-thermal radiation fixes a significant difference in the values of the dielectric constants of aqueous solutions at high dilutions from their values for water.

scholarly journals Crystal Dislocations: Their Impact on Physical Properties of Crystals

Crystals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 413
Author(s):  
Peter Lagerlof
Keyword(s):  
Crystal Structure ◽  
Mechanical Properties ◽  
Crystal Growth ◽  
Physical Properties ◽  
Phase Transformations ◽  
Electronic Properties ◽  
Martensitic Phase ◽  
Martensitic Phase Transformations

It is rare to find technical applications involving a material of any crystal structure that is not impacted by dislocations—which affect the material’s mechanical properties, interfaces, martensitic phase transformations, crystal growth, and electronic properties, to name a few. [...]

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