Thickness dependence of the phase transformation in FePt alloy thin films

被引：15

作者：

Minh, PTL

Thuy, NP

Chan, NTN

机构：

[1] ITIMS, Hanoi, Vietnam

[2] Vietnam Natl Univ, Fac Technol, Hanoi, Vietnam

[3] Hanoi Univ Technol, Inst Engn Phys, Hanoi, Vietnam

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 277卷 / 1-2期

关键词：

ordering kinetics; grain growth; magnetization process; Fe-Pt thin film;

D O I：

10.1016/j.jmmm.2003.10.032

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

FePt alloy thin films of different thickness have been prepared and studied. Both X-ray analysis and magnetization measurements have been used to detect the FCC (A1)-FCT (L1(0)) phase transformation due to annealing in these films. It was found that the ordering process in the thick samples takes place at much lower temperature in comparison to the thinner ones. The observed phenomenon can be understood taking into account the kinetics of the FCC-FCT phase transformation and grain growth. The obtained experimental results suggest the existence of an optimal annealing temperature for each defined sample thickness. (C) 2003 Elsevier B.V. All rights reserved.

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页码：187 / 191

页数：5

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