Cu-Au TYPE STRUCTURES IN THE STAGGERED QUADRUPOLAR REGION OF THE fcc BLUME-EMERY-GRIFFITHS MODEL

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ÖZKAN A., Kutlu B.

INTERNATIONAL JOURNAL OF MODERN PHYSICS C, cilt.20, sa.10, ss.1617-1632, 2009 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 20 Sayı: 10
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1142/s0129183109014631
  • Dergi Adı: INTERNATIONAL JOURNAL OF MODERN PHYSICS C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1617-1632
  • Anahtar Kelimeler: Spin-1 Ising BEG model, cellular automaton, phase diagram, face-centered-cubic lattice, CREUTZ CELLULAR-AUTOMATON, 2-DIMENSIONAL ISING-MODEL, SIZE-SCALING RELATIONS, MAGNETIC LATTICE-GAS, MULTICRITICAL PHASE-DIAGRAMS, RENORMALIZATION-GROUP THEORY, MONTE-CARLO SIMULATIONS, NEXT-NEAREST-NEIGHBOR, CRITICAL EXPONENTS, CAPEL MODEL
  • Gazi Üniversitesi Adresli: Evet

Özet

The spin-1 Ising Blume-Emery-Griffiths (BEG) model has been simulated using a cellular automaton (CA) algorithm improved from the Creutz cellular automaton (CCA) for a face-centered-cubic (fcc) lattice. The ground state diagram (k, d) of the fcc BEG model has ferromagnetic (F), quadrupolar (Q), and staggered quadrupolar (SQ) structure regions. The simulations have been made in the SQ region for the parameter values in the intervals -24 <= d = D/J < 0 and -3 <= k = K/J <= 0. The phase diagrams on the (kT(C)/J, d) and the (kT(C)/J, k) planes have been obtained through k = -3 and d = -4 lines, respectively. The SQ region separates into five regions (A(3)B(a), A(3)B(f), AB (type-I), AB (type-II), and AB(3)(f)) which have the different stoichiometric Cu-Au type structures.