Dynamic dipolar and quadrupolar susceptibilities for the spin-1 Blume-Emery-Griffiths model based on Onsager theory of irreversible thermodynamics

Pawlak A., ERDEM R., GÜLPINAR G.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol.472, pp.86-95, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 472
  • Publication Date: 2019
  • Doi Number: 10.1016/j.jmmm.2018.09.115
  • Journal Name: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.86-95
  • Keywords: Blume-Emery-Griffiths model, Multicritical phase diagram, Phase transitions and critical phenomena, Dynamic quadrupolar susceptibility, LATTICE-GAS MODEL, MULTICRITICAL PHASE-DIAGRAMS, EXTERNAL MAGNETIC-FIELD, ISING-MODEL, RENORMALIZATION-GROUP, RELAXATION PHENOMENA, TRANSITION POINT, MEAN-FIELD, ALLOYS, CONDENSATION
  • Dokuz Eylül University Affiliated: Yes

Abstract

The expressions for dynamic (complex) dipolar and quadrupolar susceptibilities are obtained within the framework of the linear theory of irreversible thermodynamics in the Blume-Emery-Griffiths model. Frequency, temperature as well as crystal field dependences of the dispersion relations and absorption factors are investigated for two different phase diagram topologies which take place for K/J = 3 and K/J = 5.0. Their behaviors near the second- and first-order transition points as well as multi-critical points such as tricritical, triple and critical endpoint are presented.