Atomic ordering kinetics of FePt thin films: Nucleation and growth of L10 ordered domains.
- Resource Type
- Article
- Authors
- Li, X. H.; Liu, B. T.; Li, W.; Sun, H. Y.; Wu, D. Q.; Zhang, X. Y.
- Source
- Journal of Applied Physics. 5/1/2007, Vol. 101 Issue 9, p093911. 5p. 1 Diagram, 4 Graphs.
- Subject
- *THIN films
*ANISOTROPY
*CALORIMETRY
*PHASE transitions
*NANOCRYSTALS
*ARRHENIUS equation
*EXPONENTS
*MAGNETIC devices
- Language
- ISSN
- 0021-8979
To lower the L10 ordering temperature of FePt thin films, a detailed understanding of the nucleation and growth processes of L10 ordered domains is of particular importance. In the present study, a nucleation activation energy En=(0.5-0.6)±0.1 eV and a growth activation energy Eg=0.9±0.1 eV for the L10 ordered domains in the FePt thin films are determined by studying the individual annealing-temperature dependence of the nucleation and growth parameters of the L10 ordered domains. These data make a contribution to the understanding of the high L10 ordering temperature of FePt thin films for manufacturing magnetic recording media. [ABSTRACT FROM AUTHOR]