Controlling the crystallographic orientation and the axis of magnetic anisotropy in L1o FePt films

被引：50

作者：

Chen, JS ^{[1
]}

Lim, BC ^{[1
]}

Wang, JP ^{[1
]}

机构：

[1] NUS, Data Storage Inst, Singapore, Singapore

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 10期

关键词：

D O I：

10.1063/1.1504489

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

L1(0) ordered FePt films with (200) or (001) preferred orientations and longitudinal or perpendicular anisotropy have been prepared by dc magnetron sputtering. Different base pressures for sputtering were controlled by air feeding. The fct-FePt film exhibits (200) preferred orientation and has longitudinal anisotropy at the base pressure of 4x10(-6) Torr. As the base pressure is improved (below 9x10(-7) Torr), the fct-FePt films exhibit (001) preferred orientation and has perpendicular anisotropy. When the CrRu underlayer thickness decreases from 80 to 30 nm, an improved fct-FePt (001) orientation is obtained. The atmospheric constituents such as oxygen and nitrogen play an important role in controlling the crystallographic orientation and axis of magnetic anisotropy. (C) 2002 American Institute of Physics.

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页码：1848 / 1850

页数：3

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