Experimental realization of graded L10-FePt/Fe composite media with perpendicular magnetization

被引：72

作者：

Goll, D. ^{[1
]}

Breitling, A. ^{[1
]}

Gu, L. ^{[1
]}

van Aken, P. A. ^{[1
]}

Sigle, W. ^{[1
]}

机构：

[1] Max Planck Inst Met Res, D-70569 Stuttgart, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 104卷 / 08期

关键词：

D O I：

10.1063/1.2999337

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A concept is suggested and experimentally realized to fabricate graded media for ultrahigh density magnetic recording where the material parameters vary gradually in the interfacial region between the hard magnetic part and the soft magnetic part of epitaxial L1(0)-FePt/Fe exchange spring nanocomposites with perpendicular magnetization. A graded interface between the L1(0)-FePt phase and the Fe phase is formed by depositing part of the Fe layer at elevated temperatures. The existence of the graded interface is verified by electron energy-loss spectroscopy. The influence of the character of the graded interface on the magnetic properties is studied. With increasing thickness of the graded interface the coercivity continuously decreases, which can be used for a fine tuning of the coercivity of exchange spring composite media. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2999337]

引用

页数：4

共 20 条

[1] Exchange-coupled FePt/Fe bilayers with perpendicular magnetization [J].