Paper Title:
Magnetism of Ultrathin Fe Films in the Vicinity of Transition from Ferromagnetism to Superparamagnetism
  Abstract

We have investigated the magnetism of ultrathin Fe films grown on the inclined Al2O3(0001), especially, in the vicinity of ferromagnetic-superparamagnetic transition. In the transition region, the magnetic state of Fe films is the coexistence of ferromagnetism and superparamagnetism. The ratio of the components in ferromagnetic and superparamagnetic state is dependent on the growth temperature. For Fe grown on the flat substrate without the inclination, as the growth temperature increases, the ratio of the component in ferromagnetic state increases, reaches to the maximum and decreases again. On the presence of substrate inclination, the ratio of the component in ferromagnetic state increases, reaches to the maximum and decreases again. decreases monotonically with increasing growth temperature. We investigated the dominant factor of the complex magnetic state, and clarified that the complex magnetic state is dominated by the change of the film structure and the effective magnetic anisotropy energy.

  Info
Periodical
Edited by
Yukichi Umakoshi and Shinji Fujimoto
Pages
165-170
DOI
10.4028/www.scientific.net/MSF.512.165
Citation
Y. Shiratsuchi, Y. Endo, M. Yamamoto, "Magnetism of Ultrathin Fe Films in the Vicinity of Transition from Ferromagnetism to Superparamagnetism", Materials Science Forum, Vol. 512, pp. 165-170, 2006
Online since
April 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Giancarlo Bottoni
Abstract:The magnetic anisotropy of Co/Ti-doped Ba ferrite particles for application in recording media is studied. A method which deduces the...
2534
Authors: Hong Bo Zhang, Cheng Bao Jiang
Abstract:The Tb/Dy ratio of Tb0.30Dy0.70Fe1.95 giant magnetostrictive alloy was shifted away from 0.30/0.70 to 0.36/0.64 to enlarge the operating...
2205
Authors: Pervez Akhtar, Tariq Javid Ali, Arshad Aziz
Abstract:The paper describes results of investigation on sputtered NiFe Films to determine the sputter deposition condition that could produce...
160
Authors: I. Zakharchuk, E. Mikhalitsyna, Erkki Lähderanta
Chapter 1: Functional and Special Structural Materials, Technologies of Coatings, Strengthening and Hardening
Abstract:Thin films of FeCuNbMoSiB have been sputtered on Corning glass substrates with thicknesses varying from 10 to 200 nm with post annealing at...
322