Polycrystalline Sm-Fe thin films were fabricated by annealing sputter-deposited Sm-Fe thin films. Although the annealing of the as-deposited Sm-Fe film tends to precipitate Fe grains, leading to a non-uniform microstructure and low magnetostriction coefficient, the thermal annealing performed in multiple steps produced a relatively large fraction of SmFe2 with uniform grain size. The Sm-Fe thin film annealed at 400, 500, and 600 °C for 1 h at each step produced the highest magnetostriction coefficient in this study; -57 ppm at an applied field of 2.5 kOe.
Bibliographical noteFunding Information:
This work was supported by the Ministry of Science and Technology through the Nanoscopia Research Center at Hanyang University. We are grateful to Professor Sung-Chul Shin and his graduate students for their kind assistance for the magnetostriction measurements.
Copyright 2008 Elsevier B.V., All rights reserved.
- Sm-Fe thin film
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering