Non equilibrium magnetocaloric properties of Ising model defined on regula lattices with arbitrary coordination number

VATANSEVER E., AKINCI Ü., YÜKSEL Y.

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, cilt.479, ss.563-571, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 479
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1016/j.physa.2017.03.029
  • Dergi Adı: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.563-571
  • Anahtar Kelimeler: Dynamic critical phenomena, Effective field theory, Magnetic refrigeration, Magnetocaloric effect, MONTE-CARLO-SIMULATION, MAGNETIC REFRIGERATION, TEMPERATURES, FERROMAGNET, HEAT
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Using the effective field theory, we have studied the non equilibrium magnetocaloric properties of Ising systems defined in a wide variety of lattice structures with coordination numbers z = 3, 4, 6, 8 and 12. Effects of coordination number, as well as the presence of oscillating magnetic field on several magnetic and magnetocaloric properties such as the critical temperature, isothermal entropy variation and refrigerant capacity have been investigated and discussed in detail. According to our results, the low dimensional structures would be potential candidates in magnetocaloric refrigeration applications. Moreover, without losing the favorable magnetocaloric properties, the working temperature of a magnetocaloric material can be easily tuned by applying oscillating magnetic fields with proper amplitude and frequency which may be feasible in room temperature cooling applications. (C) 2017 Elsevier B.V. All rights reserved.