Non-equilibrium phase transition properties of disordered binary ferromagnetic alloy

VATANSEVER E., AKINCI Ü., POLAT H.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, cilt.389, ss.40-47, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 389
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.jmmm.2015.04.042
  • Dergi Adı: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.40-47
  • Anahtar Kelimeler: Dynamic phase transitions, Disordered binary alloy, Multi-critical phenomena, Effective-field theory, EFFECTIVE-FIELD THEORY, MONTE-CARLO-SIMULATION, KINETIC ISING-MODEL, MAGNETIC HYSTERESIS, RANDOM MIXTURES, MIXED-CRYSTALS, DIAGRAMS, TEMPERATURE, FREQUENCY, DYNAMICS
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Non equilibrium dynamic phase transition features of a disordered binary ferromagnetic alloy consisting of spin-1/2 and spin-1 components under the presence of a time dependent oscillating magnetic held have been analyzed for a two dimensional square lattice. With the help of Glauber-type stochastic process, the kinetic equations of time dependent magnetizations have been derived based On the effective-field theory with single-site correlations. A systematic analysis for the whole range of the concentrations of randomly distributed components as well as other system parameters has been carried out According to our numerical investigations, the considered system presents unusual thermal and magnetic held behaviors such as the existence of dynamic multi-critical behavior and also boundaries of the coexistence region, where both dynamically ordered and disordered phases overlap, sensitively depends on the studied parameter space. (C) 2015 Elsevier B.V. All rights reserved