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, vol.69, pp.38-49, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 69
  • Publication Date: 2021
  • Doi Number: 10.1016/j.cjph.2020.12.001
  • Journal Name: CHINESE JOURNAL OF PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, INSPEC, zbMATH
  • Page Numbers: pp.38-49
  • Keywords: Spin-1 Ising nanoparticle, quadrupole ordering, quadrupole hysteresis, biquadratic exchange interaction, single-ion anisotropy
  • Akdeniz University Affiliated: Yes

Abstract

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.