Analysis of the Specific Heat and the Free Energy and Calculation of the Entropy and the Internal Energy of [N(ch3)4]2mnbr4 Close To the Phase Transition

Kiraci, A.09.01. Ortak Dersler Bölümü09. Rektörlük01. Çankaya Üniversitesi2022-03-222025-09-182022-03-222025-09-182021Kiracı, Ali (2021). "Analysis of the specific heat and the free energy and calculation of the entropy and the internal energy of [N(CH3)(4)](2)MnBr4 close to the phase transition", Ferroelektrics, Vol. 583, No. 1, pp. 1-11.0015-01931563-5112https://doi.org/10.1080/00150193.2021.1980335https://hdl.handle.net/123456789/11529Kiraci, Ali/0000-0003-4067-1004The critical behavior of the specific heat and the Gibbs free energy of [N(CH3)(4)](2)MnBr4 was analyzed using the 'sing model close to the phase transition temperature of T-c = 276.5 K. Obtained value of alpha=0.02 from the Gibbs free energy and from the specific heat approximately 2.0 K and 1.4 K, respectively, below Tc (ferroelastic phase) and also deduced value of alpha= 0.04 from the specific heat approximately 0.3 K above T-c (paraelastic phase) can be compared with that predicted from mean field theory (alpha = 0). Also, the entropy and the internal energy of this crystal were predicted.eninfo:eu-repo/semantics/closedAccessIsing ModelSpecific HeatFree EnergyEntropy[N(Ch3)(4)](2)Znbr4Analysis of the Specific Heat and the Free Energy and Calculation of the Entropy and the Internal Energy of [N(ch3)4]2mnbr4 Close To the Phase TransitionAnalysis of the specific heat and the free energy and calculation of the entropy and the internal energy of [N(CH3)(4)](2)MnBr4 close to the phase transitionArticle10.1080/00150193.2021.19803352-s2.0-85119998916