STABLE, METASTABLE AND UNSTABLE SOLUTIONS OF A SPIN-1 ISING SYSTEM IN THE PRESENCE OF MAGNETIC-FIELDS DUE TO THE DIPOLE AND QUADRUPOLE-MOMENTS
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, cilt.146, sa.3, 1995 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Kısa Makale
- Cilt numarası: 146 Sayı: 3
- Basım Tarihi: 1995
- Doi Numarası: 10.1016/0304-8853(94)01597-x
- Dergi Adı: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Erciyes Üniversitesi Adresli: Evet
Özet
The spm-1 Ising model with bilinear (J) and biquadratic (K) interactions is studied for magnetic fields H-S and H-Q representing dipole and quadrupole moments, respectively, by using the lowest approximation of the cluster variation method. The influence of H-S, H-Q, and alpha = J/K on metastable and unstable solutions, which are very important for many theoretical and experimental works, is investigated and it is found that metastable and unstable solutions occur at high temperatures when alpha and H-Q increased. However if H-S is increased, metastable and unstable solutions can be found only at low temperatures.