Atomic ordering kinetics of FePt thin films

X H Li; B T Liu; H Y Sun; W Li; X Y Zhang

doi:10.1166/jnn.2009.c105

Atomic ordering kinetics of FePt thin films

J Nanosci Nanotechnol. 2009 Feb;9(2):1141-3. doi: 10.1166/jnn.2009.c105.

Authors

X H Li¹, B T Liu, H Y Sun, W Li, X Y Zhang

Affiliation

¹ State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P. R. China.

PMID: 19441473
DOI: 10.1166/jnn.2009.c105

Abstract

In the present study, the nucleation and growth kinetics of the L1(0) ordered domains in FePt thin films were studied by using X-ray diffraction (XRD) measurements combined with transmission electron microscopy (TEM). A small nucleation activation energy En = (0.5 +/- 0.1) eV and a relatively large growth activation energy Eg = (0.9 +/- 0.1) eV for the L1(0) ordered domains are separately determined. The high ratio Eg/En > 1 yields an understanding of a high L1(0) ordering temperature for the FePt thin films used for magnetic recording media.