scholarly journals Excess wing in the dielectric loss of glass-forming ethanol: A relaxation process

2000 ◽  
Vol 62 (13) ◽  
pp. 8878-8883 ◽  
Author(s):  
R. Brand ◽  
P. Lunkenheimer ◽  
U. Schneider ◽  
A. Loidl
Keyword(s):  
Dielectric Loss ◽  
Relaxation Process ◽  
Glass Forming ◽  
Excess Wing

Confinement effects on the excess wing in the dielectric loss of glass-formers

2003 ◽  
Vol 64 (5) ◽  
pp. 675-681 ◽  
Author(s):  
R Bergman ◽  
J Mattsson ◽  
C Svanberg ◽  
G. A Schwartz ◽  
J Swenson
Keyword(s):  
Dielectric Loss ◽  
Confinement Effects ◽  
Excess Wing

scholarly journals Excess wing in glass-forming glycerol and LiCl-glycerol mixtures detected by neutron scattering

2015 ◽  
Vol 38 (1) ◽  
Author(s):  
S. Gupta ◽  
N. Arend ◽  
P. Lunkenheimer ◽  
A. Loidl ◽  
L. Stingaciu ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Glass Forming ◽  
Excess Wing

scholarly journals Nonlinear Dielectric Response at the Excess Wing of Glass-Forming Liquids

2013 ◽  
Vol 110 (10) ◽  
Author(s):  
Th. Bauer ◽  
P. Lunkenheimer ◽  
S. Kastner ◽  
A. Loidl
Keyword(s):  
Dielectric Response ◽  
Nonlinear Dielectric ◽  
Glass Forming ◽  
Excess Wing

Is There an Excess Wing in the Dielectric Loss of Plastic Crystals?

1999 ◽  
Vol 82 (9) ◽  
pp. 1951-1954 ◽  
Author(s):  
R. Brand ◽  
P. Lunkenheimer ◽  
U. Schneider ◽  
A. Loidl
Keyword(s):  
Dielectric Loss ◽  
Plastic Crystals ◽  
Excess Wing

Relaxation Processes Features of Glass-Forming Melts on the Basis of Copper

2015 ◽  
Vol 660 ◽  
pp. 108-112
Author(s):  
Viktor Konashkov ◽  
Vladimir Tsepelev ◽  
Arkadi Povodator
Keyword(s):  
Relaxation Process ◽  
Constant Temperature ◽  
Liquid State ◽  
Kinematic Viscosity ◽  
Relaxation Processes ◽  
Temperature Instability ◽  
State Data ◽  
Glass Forming ◽  
Heating And Cooling ◽  
Two Samples

Two samples of industrial alloys on the basis of copper are experimentally studied. These alloys are used for production of amorphous solders. The main studied property is kinematic viscosity of metal melt in a liquid state. Data of viscosity dependences from temperature when heating and the subsequent cooling are obtained. Besides, viscosity dependences at constant temperatures from time are received. On viscosity dependences from temperature, for the same samples, abnormal sites and a divergence of curves of heating and cooling are found. On viscosity dependences from time, at a constant temperature, instability is found. The conclusion is drawn that the revealed features are connected with complexity of relaxation process of the studied fusions.

Dielectric Spectroscopy at High Frequencies on Glass Forming Liquids

1996 ◽  
Vol 455 ◽  
Author(s):  
P. Lunkenhemer ◽  
A. Pimenov ◽  
M. Dressel ◽  
B. Gorshunov ◽  
U. Schneider ◽  
...  
Keyword(s):  
Light Scattering ◽  
Dielectric Loss ◽  
Propylene Carbonate ◽  
Dielectric Spectroscopy ◽  
Far Infrared ◽  
Relaxation Peak ◽  
Fast Process ◽  
High Frequencies ◽  
Glass Forming

ABSTRACTDielectric spectroscopy up to 950 GHz has been performed on various glass formers as glycerol, propylene-carbonate, and Salol. Special attention is given to the dielectric loss, ε″, in the crossover regime from the a-relaxation to the far-infrared (FIR) response where it can be directly compared to the dynamic susceptibilities obtained by neutron and light scattering techniques. We observe a minimum in ε″(ν) at high frequencies which cannot be explained by a simple transition from a-relaxation peak to the FIR bands but has to be attributed to additional fast processes. In all materials investigated, ε″(ν) increases significantly sublinear above the minimum. The ratio of the intensity of the α-process and the fast process as determined from our dielectric experiments is significantly higher compared to the results from the scattering experiments.

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