Nonequilibrium Thermodynamics of Ising Magnets

Erdem, Rıza; Gulpinar, Gul

doi:10.5772/20013

Cited by 2 publications

(2 citation statements)

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“…By solving these equations relaxation time ( ) is calculated for temperatures near the SOPT. A good reference for the description of relaxation properties of the Ising model is [27], whose notation is used here.…”

Section: Derivations Of Kinetic Equation Relaxation Time and Dynamic Susceptibilitymentioning

confidence: 99%

“…Recent efforts on the RP in many different systems are devoted to either experimental [1][2][3][4][5] or theoretical [6][7][8][9] basis. Besides above works, it is mostly known that the RP in different Ising systems are one of the most actively studied problems in statistical physics and encountered in different areas of physics [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. Similarly, the magnetic responses of Ising systems have long time been a subject of interest because of their potential applications as: spin glasses [30], cobalt-based alloys [31], magneto-optical devices [32],…”

Section: Introductionmentioning

confidence: 99%

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On the Loci of Relaxation Time and Magnetic Dispersion Maxima in the Mean-Field Ising Model

Özüm

2020

Sakarya University Journal of Science

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Based on the phenomenological approach, loci of relaxation time and magnetic dispersion maxima near the critical regime in a spin-1/2 mean-field Ising model were performed. The shift in temperature (T) of relaxation time (τ) maximum was detected and its behavior near the secondorder transition points are presented at different magnetic field values (h) and different lattice coordination numbers (q). An expression for the dynamic (or complex) susceptibility (χ = χ1 -iχ2) is also derived. The temperature dependence of the magnetic dispersion (χ1) and magnetic absorption (χ2) factors have been studied near the critical regime. It is found that the maximum of χ1 as a function of frequency (ω) and kinetic coefficient (L) obeying an approximately exponential increases and decreases in T-ω and T-L planes near the critical region.

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Section: Derivations Of Kinetic Equation Relaxation Time and Dynamic Susceptibilitymentioning

confidence: 99%