Dynamic phase transition and universality in a quasi 2D system: Bilayer Ising/Blume-Capel ferromagnet on a honeycomb lattice

YÜKSEL Y.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, cilt.513, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 513
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.jmmm.2020.167249
  • Dergi Adı: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Atomistic modeling, Critical exponents, Dynamic phase transition, Monte Carlo, Magnetic bilayers, ONE ISING-MODEL
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Monte Carlo simulation technique is applied on a magnetic bilayer system composed of spin-1/2 Ising and spin-1 Blume-Capel spin variables distributed on a honeycomb lattice. Assuming an indirect exchange interaction between adjacent monolayers, we investigate the influence of single ion anisotropy and number of nonmagnetic layers between the magnetic sheets on the critical behavior of the system. Equilibrium phase diagram in a reduced pseudo critical temperature (T-c/J) versus reduced single ion anisotropy (D-B/J) plane has been determined. In the presence of alternating magnetic field, dynamic phase transition properties have been elucidated. The form of the oscillating magnetic field is assumed to be in a square wave form. By performing a detailed finite-size scaling analysis, we have calculated the critical half period t(1/)(2)(c) at which the system undergoes a dynamic phase transition between dynamically ordered and disordered states. Extracted critical exponent ratios beta/nu and gamma/nu suggest that observed dynamic phase transition for the present multilayer system falls into the same universality class as the equilibrium two-dimensional Ising model.