Order parameterSecond order phase transitionStructural phase transitionSymmetry and symmetry breaking are basic concepts within the discussion of second﹐rder phase transitions. The theory of changing symmetry within a phase transition was initially described by L.D. Landau. This chapter describes second﹐...
Phase transitions can also be continuous, which is the case when the order parameter changes from zero to a nonzero value in a continuous way. Continuous, or second-order, phase transitions can be very spectacular, because we will see that they give rise to a diverging correlation length and...
solid-state phase transformationsthermodynamic properties/ A6470K Solid-solid transitionsExperimental evidence is given of a second order transition in the spinel CdIn 2 S 4 . The specific heat c p shows a step at the transition temperature ( T c =403°K), the thermal expansion coefficient α...
Landau's theory of second-order phase transitions for systems with two order parameters is discussed and applied to a meanfield Hamiltonian for an Ising model with bilinear and biquadratic pair interactions. Second-order phase transition temperatures and tricritical points are determined for several spin...
The theory predicts that ferroelectric materials undergo a second-order phase transition from a paraelectric phase to a ferroelectric phase as the temperature is decreased. This phase transition is characterized by the appearance of a spontaneous polarization, which is the result of a symmetry-breaking...
The existence of the Mpemba effect considered in this manuscript is determined by the time it takes the system to undergo a second-order phase transition as a function of the initial temperature, when the system is quenched to a cold environment. However, during the relaxation process the system...
first-order transitionsThe basic concepts of the Landau theory of phase transitions are introduced through working examples. A number of rules governing the application of the theory to second and first-order transitions are given. The approach to magnetostructural transitions in magnetic mulltiferroic...
This may be attributed to the fact that local fluctuations are not addressed effectively by HIJING model; however, it successfully explains the phenomenon of flow. Finally, some evidences regarding second-order phase transition are found.Acta Physica Polonica BKAMAL, ARSHADAHMAD...
We consider the case $R=J_{nn}/J_{nnn}=1$ for which the competitive nature of interactions produces a sublattice ordering known as superantiferromagnetism and the pure system undergoes a second-order transition with a positive specific heat exponent $\\\alpha$. For a particular disorder ...
and quantum field theory. This volume is comprised of 15 chapters and begins with a discussion on Landau's theory of second-order phase transitions, which includes his assumption that all thermodynamic functions would allow regular series expansions near the transition point. The following chapters fo...