Three-dimensional superconductivity and vortex glass transition in

2006 ◽  
Vol 378-380 ◽  
pp. 447-448
Author(s):  
Hyun-Sook Lee ◽  
Heon-Jung Kim ◽  
Hyun-Jung Kim ◽  
Myung-Hwa Jung ◽  
Younghun Jo ◽  
...  
Keyword(s):  
Glass Transition ◽  
Three Dimensional ◽  
Vortex Glass

scholarly journals Crossover from a three-dimensional to purely two-dimensional vortex-glass transition in deoxygenatedYBa2Cu3O7−δthin films

1999 ◽  
Vol 60 (22) ◽  
pp. 15423-15429 ◽  
Author(s):  
Z. Sefrioui ◽  
D. Arias ◽  
M. Varela ◽  
J. E. Villegas ◽  
M. A. López de la Torre ◽  
...  
Keyword(s):  
Glass Transition ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Vortex Glass

scholarly journals The effective complex permittivity stability in filled polymer nanocomposites studied above the glass transition temperature

2018 ◽  
Vol 149 ◽  
pp. 01080 ◽  
Author(s):  
F. Elhaouzi ◽  
A. Mdarhri ◽  
M. Zaghrioui ◽  
C. Honstettre ◽  
I. El Aboudi ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Complex Permittivity ◽  
Dielectric Response ◽  
Volume Fraction ◽  
Three Dimensional ◽  
Mechanical Analysis ◽  
Low Frequencies ◽  
Neat Polymer

The temperature effecton the dielectric response of nanocomposite at low frequencies range is reported. The investigated samples are formed by a semi-crystalline ethylene-co-butyl acrylate (EBA) polymer filled with three concentrations of the dispersed conducting carbon black (CB) nanoparticles. The temperature dependence of the complex permittivity has been analyzedabove the glass transition temperature of the neat polymer matrix Tg=-75°C. For all CB concentrations, the dielectric spectra follow a same trend in frequency range 100-106Hz. More interestingly, the stability of the effective complex permittivity ɛ=ɛ' -iɛ'' with the temperature range of 10-70°C is explored. While the imaginary part of the complex permittivity ɛ'' exhibits a slight decreasewith temperature, the real part ɛ' shows a significant reduction especially for high loading samples. The observed dielectric response may be related to the breakup of the three-dimensional structurenetwork formed by the aggregation of CB particles causing change at the interfaceEBA-CB.This interface is estimated bythe volume fraction of constrained polymer chain according to loss tangent data of dynamic mechanical analysis.

scholarly journals Josephson-Vortex-Glass Transition in Strong Fields

2000 ◽  
Vol 69 (9) ◽  
pp. 2993-3006 ◽  
Author(s):  
Ryusuke Ikeda ◽  
Hiroto Adachi
Keyword(s):  
Glass Transition ◽  
Josephson Vortex ◽  
Vortex Glass ◽  
Strong Fields

Jump in c-axis transport at the Bragg glass–vortex glass transition

2004 ◽  
Vol 408-410 ◽  
pp. 489-490 ◽  
Author(s):  
Alexander D. Hernández ◽  
Daniel Domı́nguez
Keyword(s):  
Glass Transition ◽  
Vortex Glass ◽  
Bragg Glass

Dynamics of the Vortex-Glass Transition

2006 ◽  
Author(s):  
Golan Bel ◽  
Baruch Rosenstein
Keyword(s):  
Glass Transition ◽  
Vortex Glass

scholarly journals Studies of Formation Mechanism, Structure, and Properties of Network Copolymers Obtained by Cocuring of Rolivsan Thermosetting Resins with Aromatic Diamines

2019 ◽  
Vol 2019 ◽  
pp. 1-15
Author(s):  
B. A. Zaitsev ◽  
L. G. Kleptsova ◽  
I. D. Shvabskaya
Keyword(s):  
Glass Transition ◽  
High Temperature ◽  
Thermal Analyses ◽  
Polymer Network ◽  
Three Dimensional ◽  
Transition Temperatures ◽  
Structure And Properties ◽  
Aromatic Diamines ◽  
Thermosetting Resins ◽  
Glass Transition Temperatures

Rolivsan thermosetting resins (ROLs) demonstrate high glass-transition temperatures and excellent processability. In our work, high-temperature properties of ROLs were significantly improved using a novel technique for structural and chemical modification of microheterogeneous network polymers. This technique involves, among other procedures, cocuring of rolivsan resins with aromatic diamines (ADA). The most noticeable increase in storage moduli and glass transition temperatures (Tg) of these copolymers was achieved when ROLs were modified with 10-15 wt.% of ADA and the resulting blends were subjected to thermal treatment in air in the temperature range 180 to 320°C for several hours. FTIR, 13С NMR spectroscopy, and dynamic mechanical and thermal analyses were used for studying the structure and properties of the obtained products. It was demonstrated that the mechanism of formation of ROL-ADA copolymers includes the following high-temperature reactions: (i) three-dimensional radical copolymerization of unsaturated ROL components and (ii) cleavage of heat-sensitive methacrylate crosslinking units inside the polymer network. The second process is accompanied by formation of pending units of methacrylic acid and methacrylic anhydride, which participate in condensation reactions with ADA.

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