Hysteretic behavior of quadrupolar ordering in a 2D magnetic spin-1 Ising nanoparticle

ERDEM R., Yalcin O., ÖZÜM S., Sahin A., Demirer N.

CHINESE JOURNAL OF PHYSICS, cilt.69, ss.38-49, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 69
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.cjph.2020.12.001
  • Dergi Adı: CHINESE JOURNAL OF PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, INSPEC, zbMATH
  • Sayfa Sayıları: ss.38-49
  • Anahtar Kelimeler: Spin-1 Ising nanoparticle, quadrupole ordering, quadrupole hysteresis, biquadratic exchange interaction, single-ion anisotropy
  • Akdeniz Üniversitesi Adresli: Evet

Özet

Pair approximation technique has been used to study the quadrupolar ordering properties for the 2D magnetic spin-1 Ising nanoparticles, consisting of core and surface parts with an interface coupling. Similar to the magnetic hysteresis, it has been shown that the quadrupole order parameter (Q) as a function of single-ion anisotropy (D) has a 'hysteresis' character which is generally called quadrupole (or QD) hysteresis. The observed QD loops strongly depend on temperature (T), external magnetic field (H) and biquadratic exchange interaction (K). Shifted QD loops with an asymmetry are found when H and K values are increased. These behaviors are also discussed in relation to other theoretical findings.