first-order transition
first-order transition
[¦fərst ‚ȯrd·ər trans′zish·ən] (thermodynamics)
A change in state of aggregation of a system accompanied by a discontinuous change in enthalpy, entropy, and volume at a single temperature and pressure.
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The topics include a critical assessment of the random first-order transition theory of glasses, the dielectric spectroscopy of glassy dynamics, glassiness in uniformly frustrated systems, dynamics in the crossover region of supercooled liquids, and glassy dynamics of proteins.
In a first-order transition, such as the freezing of water when chilled, the jump from one state to the other is discontinuous.
The blends showed a single glass transition and no sign of a first-order transition associated with the solid crystal-nematic phase transition of the LCP.
This is an important result for assessing future technological applications, since there is a definite limit, by virtue of being a first-order transition, to which the materials properties can be tailored to achieve the highest critical currents.
9] polymorphs (deduced from electron diffraction data) do not exhibit group/subgroup relations, and, therefore, phase transitions between them must be first-order transitions.
Generally, first-order transitions such as melting give distinct peaks.
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- First-Order Method
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