JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol.472, pp.86-95, 2019 (SCI-Expanded)
Article / Article
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Science Citation Index Expanded (SCI-EXPANDED), Scopus
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:
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.