Dynamic multicritical phase diagrams of the mixed spin (2, 5/2) Blume-Emery-Griffiths model with repulsive biquadratic coupling

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Gençaslan M., Keskin M.

TURKISH JOURNAL OF PHYSICS, cilt.46, sa.6, ss.252-275, 2022 (ESCI)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 46 Sayı: 6
  • Basım Tarihi: 2022
  • Doi Numarası: 10.55730/1300-0101.2731
  • Dergi Adı: TURKISH JOURNAL OF PHYSICS
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus, Academic Search Premier, Compendex, INSPEC, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.252-275
  • Erciyes Üniversitesi Adresli: Evet

Özet

Abstract: We investigated the dynamic phase transitions (DPTs) in the mixed spin (2, 5/2) Blume-Emery-

Griffiths model with repulsive biquadratic interaction in the presence of a time-varying magnetic field. We

used the path probability method to obtain the set of the dynamic equations. We numerically solved these

dynamic equations to characterize the nature of first- and second-order phase transitions and to find the DPT

temperatures as well as obtain the phases in the system. We constructed the dynamic phase diagrams (DPDs)

in reduced temperature and amplitude of oscillating magnetic field plane. We observed that the DPDs display

richer, complex and more topological various type of phase diagrams. In particular, DPDs exhibit the disordered

phase, antiquadrupolar or staggered phase, six different ferrimagnetic phases, three different nonmagnetic

phases, and numerous mixed phases. DPDs also display two dynamic tricritical points for only smaller values

of crystal-field interactions, multiple critical end and double critical end points, one zero-temperature critical

point, one inverse critical end point, and a quadruple point depending on interaction parameters. The system

always shows the reentrant behaviors for the higher values of magnetic field amplitude, but it does not exhibit

the dynamic tricritical behavior for higher values of crystal-field parameter.