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Transition Temperature of Transition-Metal Superconductors
AIP Conference Proceedings, 1972The equation for the vertex part of a Cooper pair is developed in the Wannier representation to highlight the atomic nature of the electrons responsible for superconductivity in narrow energy bands. For a nondegenerate band and a short‐range interaction between two electrons in sites n 1 and n 2, the transition temperature, Tc, is determined by a small
J. Appel +3 more
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Glass Transition Temperature of Cyclic Stars
ACS Macro Letters, 2014Cyclic homo- and diblock copolymers with different topologies were synthesized using a combination of "living" radical polymerization and "click" coupling reactions. The topologies included 2- and 3-arm stars, with the arms consisting of either cyclic or linear polystyrene.
Hossain Md. D. +3 more
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Glass Transition Temperatures of Copolymers
Rubber Chemistry and Technology, 1958AbstractThe Gordon‐Taylor equation relating the glass transition temperature θ of a copolymer to the glass transition temperatures θ1 and θ2 of the homopolymers is equivalent to where c1 and c2 are the weight fractions of the constituents and A1 and A2 are constants. It can be recast into the following forms suitable for linear plots and where
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Glass-Transition Temperature of Water
Science, 1969The glass-transition temperature of water (T g ) has been calculated by use of the Tammann-Hesse viscosity equation with the viscosity equal to 10 13 poise at T g .
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Transition temperature of BaEu2Mn2O7
Materials Letters, 1986Abstract The existence of a phase transition was confirmed near 560 K in BaEu 2 Mn 2 O 7 by high-temperature X-ray diffractometry. The orthorhombic phase which is stable below this temperature and for stoichiometric composition transforms into the tetragonal phase without any large change along the c -axis.
Naoki Kamegashira, Shigeru Umeno
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Transition Temperatures of Superconductors
Physical Review, 1953In 1950, Frohlich and Bardeen laid the foundation for the theory of superconductivity. Today, after more than 20 years and many errors, my own included, the crucial obstacle in raising the superconducting transition temperature is substantially the same one that was foreseen by them.
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The Glass Transition Temperature of Polymer Melts
The Journal of Physical Chemistry B, 2005We develop an analytic theory to estimate the glass transition temperature T(g) of polymer melts as a function of the relative rigidities of the chain backbone and side groups, the monomer structure, pressure, and polymer mass. Our computations are based on an extension of the semiempirical Lindemann criterion of melting to locate T(g) and on the use ...
Jacek, Dudowicz +2 more
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Transition temperature engineering of octaalkoxycarbonyl phthalocyanines
Journal of Materials Chemistry, 2007We have described a simple approach to the transition temperature engineering in metal-free mesogenic octaalkoxycarbonyl phthalocyanines Pc(COOR)8. The method is based on the esterification of a common octaacid precursor with binary mixtures of alcohols.
Sergueev, Serguei +3 more
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Nuclear shape transitions at finite temperature
Physical Review C, 1989Changes in shape in /sup 24/Mg are studied at Tnot =0 both in finite-temperature mean-field calculations and in the exact canonical ensemble. With increasing temperature the canonical ensemble average of the rotational energy spectrum tends toward a more equispaced harmonic spectrum.
, Miller, , Quick, , Cole
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Bounds on the Superconducting Transition Temperature
Modern Physics Letters BI summarize recent progress on obtaining rigorous upper bounds on superconducting transition temperature [Formula: see text] in two dimensions independent of pairing mechanism or interaction strength. These results are derived by finding a general upper bound for the superfluid stiffness for a multi-band system with arbitrary interactions, with the ...
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