Phase transition in magnetic ultra‐thin films
Vol. 128 No. 1D (2019), Original Article
Vol. 128 No. 1D (2019)

Phase transition in magnetic ultra‐thin films

Original Article
https://doi.org/10.26459/hueuni-jns.v128i1D.5354
Published 2019-11-11
Pham Huong Thao
Faculty of Physics, University of Education, Hue University, 34 Le Loi St., Hue, Vietnam
Ngo Thi Thuan
Faculty of Basic Sciences, University of Medicine and Pharmacy, Hue University, 6 Ngo Quyen St., Hue, Vietnam
Phan Thi Han Ny
Pham Van Dong Secondary School, 12 Lam Hoang St., Hue, Vietnam
PDF

Keywords

thin film
surface anisotropy
spin fluctuation
phase transition
functional integral method

How to Cite

1.
Thao PH, Thuan NT, Ny PTH. Phase transition in magnetic ultra‐thin films. hueuni-jns [Internet]. 2019Nov.11 [cited 2024Nov.23];128(1D):23-9. Available from: http://222.255.146.83/index.php/hujos-ns/article/view/5354
ACM ACS APA ABNT Chicago Harvard IEEE MLA Turabian Vancouver

Download Citation

Endnote/Zotero/Mendeley (RIS) BibTeX
Crossref
Scopus
Google Scholar
Europe PMC

Abstract

In this paper, we study the influence of surface anisotropy on the phase transition in antiferromagnetic and ferromagnetic ultra‐thin films using the functional integral method. Besides, spin fluctuations are also given to illustrate these phase transitions. We find that the phase transition temperature of the ultra‐thin films may be higher or lower than that of the corresponding bulk systems, which depends on the surface anisotropy. Moreover, we also determine crossover points at which the phase transition temperature is not influenced by the thickness of the thin film.

https://doi.org/10.26459/hueuni-jns.v128i1D.5354
PDF

References

  1. Shick AB, Pickett WE, Fadley CS. Electron correlation effects and magnetic ordering at the Gd(0001) surface. Physical Review B. 2000;61(14):R9213‐R9216.
  2. Murphy B, Stettner J, Traving M, Sprung M, Grotkopp I, Müller M, Oglesby C, Tolan M, Press W. Surface behaviour at the charge density wave transition in NbSe2. Physica B: Condensed Matter. 2003;336(1‐2):103‐108.
  3. Cong BT, Thao PH. Thickness dependent properties of magnetic ultrathin films. Physica B: Condensed Matter. 2013;426:144‐149.
  4. Hirjibehedin CF, Lin C, Otte AF, Ternes M, Lutz CP, Jones BA, Heinrich AJ. Large Magnetic Anisotropy of a Single Atomic Spin Embedded in a Surface Molecular Network. Science. 2007;317(5842):1199‐1203.
  5. Rau C, Jin C, Robert M. Ferromagnetic order at Tb surfaces above the bulk Curie temperature. Journal of Applied Physics. 1988;63(8):3667‐3668.
  6. Wesselinowa JM. Influence of magnetic surface anisotropy on the dynamic properties in ferromagnetic thin films. Journal of Physics: Condensed Matter. 2006;18(35):8169‐8178.
  7. Jiang JS, Chien CL. Magnetization and finite‐size effects in Gd/W multilayers. Journal of Applied Physics. 1996;79(8):5615.
  8. Howson MA. Magnetism of thin films and multilayers. Contemporary Physics. 1994;35(5):347‐359.
  9. Mermin ND, Wagner H. Absence of Ferromagnetism or Antiferromagnetism in One‐ or Two‐Dimensional Isotropic Heisenberg Models. Physical Review Letters. 1966;17(22):1133‐1136.
  10. Ostler TA, Barton C, Thomson T, Hrkac G. Modeling the thickness dependence of the magnetic phase transition temperature in thin FeRh films. Physical Review B. 2017;95(6).
Creative Commons License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Copyright (c) 2019 Array