Transverse Field Effects of Al Concentration on Magnetic Properties of B2-FeAl Nanoparticle

OCAK H. Y., YILDIZ G. D., YILDIZ Y. G., Saatci B., Basar R., Sarioglu G.

ACTA PHYSICA POLONICA A, vol.139, no.1, pp.20-24, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 139 Issue: 1
  • Publication Date: 2021
  • Doi Number: 10.12693/aphyspola.139.20
  • Journal Name: ACTA PHYSICA POLONICA A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Compendex, INSPEC
  • Page Numbers: pp.20-24
  • Erciyes University Affiliated: Yes

Abstract

Transverse field dependence of magnetic properties of the B2-FeAl nanoparticle (B2-FeAl-np) is investigated by using the effective field theory (or the Kaneyoshi theory) at H = 0 and H = 0.25. It is found that the magnetization and the Curie temperature of B2-FeAl-np decrease as the transverse field increases. A similar decrease in the magnetization and the Curie temperature of B2-FeAl is experimentally observed by Plazaola et al. with the increase (27.5%, 30%, 32.5% and 35%) of the Al content in B2-FeAl. These theoretical and experimental results revealed that the increase of the Al content in B2-FeAl-np causes an increase in the transverse field of B2-FeAl-np. Thus, the magnetization and the Curie temperature of B2-FeAl-np decrease. However, the ferromagnetic and antiferromagnetic spin splitting of paramagnetic Fe and Al atoms is obtained by a non-zero external magnetic field (H = 0.25) at T > T-C.