Journal
JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS
Volume 44, Issue 2, Pages 170-176Publisher
CHINESE INST ENGINEERS
DOI: 10.1080/02533839.2020.1856728
Keywords
Order transformation; light scattering; FePt; thin film
Categories
Ask authors/readers for more resources
An optical method has been proposed to monitor the order transformation of FePt thin films in real-time, with the onset temperature determined accurately by measuring surface reflection amplitude. The experimentally measured kinetic ordering temperatures for different compositions of FePt thin films are in good agreement with published DSC data, confirming the effectiveness of the optical method in tracking order transformation.
An optical method is proposed to real-time monitor the order transformation of FePt thin films. By measuring the surface reflection amplitude, onset temperature can be determined correctly. In a heating process, order transformation drastically increases the surface roughness due to recrystallization and grain growth, resulting in rapid drop of surface reflectivity. By tracking this drop, the kinetic ordering temperature can be determined. Experimentally measured kinetic ordering temperature for Fe50.4Pt49.6, Fe46.6Pt53.4, and Fe52.7Pt47.3 thin films of 60 nm in thickness are 396 degrees C, 437 degrees C, and 368 degrees C, respectively. They are in good agreement with the published DSC data.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available