Hard/graded exchange spring composite media based on FePt

被引：21

作者：

Alexandrakis, V. ^{[1
]}

Speliotis, Th ^{[1
]}

Manios, E. ^{[1
]}

Niarchos, D. ^{[1
]}

Fidler, J. ^{[2
]}

Lee, Jehyun ^{[2
]}

Varvaro, G. ^{[3
]}

机构：

[1] NCSR Demokritos, IMS, Athens 15310, Greece

[2] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria

[3] ISM CNR Area Ric Roma1, I-00016 Monterotondo, RM, Italy

来源：

JOURNAL OF APPLIED PHYSICS | 2011年 / 109卷 / 07期

关键词：

FILMS;

D O I：

10.1063/1.3556773

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Hard-FePt(L1(0))/graded-FePt(L1(0) to A1) exchange spring composite media with perpendicular magnetic anisotropy have been studied. Changing the deposition temperature affects the structural transformation of FePt from cubic phase A1, which is magnetically soft, to the tetragonal phase L1(0), which is magnetically hard. Using this mechanism we were able to fabricate hard/graded composite films. Magnetic measurements revealed a significant reduction of the composite films' switching fields in comparison with those of the single hard layer. (C) 2011 American Institute of Physics. [doi:10.1063/1.3556773]

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页数：3

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