Temperature dependence of the order parameter and elastic constantC44of the quadrupolar-glass phase of mixed alkali halide cyanide crystals

1994 ◽  
Vol 49 (14) ◽  
pp. 9973-9976 ◽  
Author(s):  
K. Walasek ◽  
K. Lukierska-Walasek
Keyword(s):  
Temperature Dependence ◽  
Alkali Halide ◽  
Order Parameter ◽  
Glass Phase ◽  
Mixed Alkali ◽  
Quadrupolar Glass

Calculation of the order parameter of solid hydrogen in the quadrupolar-glass phase

1994 ◽  
Vol 49 (14) ◽  
pp. 9460-9468 ◽  
Author(s):  
K. Walasek ◽  
K. Lukierska-Walasek
Keyword(s):  
Order Parameter ◽  
Glass Phase ◽  
Solid Hydrogen ◽  
Quadrupolar Glass

Microwave spectroscopy of mixed alkali halide dimers: LiNaF2

1996 ◽  
Vol 105 (22) ◽  
pp. 9754-9761 ◽  
Author(s):  
S. Biermann ◽  
J. Hoeft ◽  
T. Törring ◽  
R. Mawhorter ◽  
F. J. Lovas ◽  
...  
Keyword(s):  
Alkali Halide ◽  
Microwave Spectroscopy ◽  
Mixed Alkali

The Physical and Molecular Properties of New Low Melting Nematics with Negative Dielectric Anisotropy

1999 ◽  
Vol 54 (6-7) ◽  
pp. 448-452 ◽  
Author(s):  
R. Dąbrowski ◽  
J. Jadżyna ◽  
J. Dziaduszek ◽  
Z. Stolarz ◽  
G. Czechowski ◽  
...  
Keyword(s):  
Dipole Moment ◽  
Physical Properties ◽  
Temperature Dependence ◽  
Carboxylic Acids ◽  
Order Parameter ◽  
Room Temperature ◽  
Dielectric Anisotropy ◽  
Molecular Dipole ◽  
Nematic Order ◽  
Moment Vector

Abstract The paper presents some basic physical properties (static electric permittivities, refraction indices, density and viscosity) of 2-chloro-4-n’-alkylphenyl esters of 4-n-alkylbicyclo[2,2,2] octane-1-carboxylic acids (n’=7, n = 5 and 7) which are, at room temperature, nematics with a negative dielectric an-isotropy. On the basis of temperature dependence of the principal static permittivities ε‖(T) and e⊥(T) of the nematics, using the Maier-Meier equations, the angle between the dipole moment vector and the long axis of mesogenic molecules, the apparent molecular dipole moment square pl μ2app(T), and the nematic order parameter S(T) were determined.

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