Akademik Veri Yönetim Sistemi
EUROPEAN PHYSICAL JOURNAL PLUS, cilt.140, sa.7, 2025 (SCI-Expanded, Scopus)
The diatomic molecules of two spin-1 atoms are placed at each site of the Bethe lattice with the coordination number three. It is assumed that each molecule can interact with its atoms using various bilinear interaction parameters. The atoms of a molecule, in addition to the antiferromagnetic (AFM) interactions of the atoms inside each molecule, interact with FM and AFM interactions with the two atoms of the nearest-neighbor molecules. This choice of interactions is the only configuration that does not cause any frustration. Moreover, every atom, i.e., every molecule, is under the influence of the crystal field and the external magnetic field. The thermal analysis of the magnetizations of the model, i.e., the membership of the atoms to a molecule and to the sublattices, has shown the existence of first- and second-order phase transitions as well as the bicritical and tricritical points.