Exchange Coupling Assisted FePtC Perpendicular Recording Media

被引：2

作者：

Hu, J. F. ^{[1
]}

Chen, J. S. ^{[2
]}

Ding, Y. F. ^{[1
]}

Lim, B. C. ^{[1
]}

Lwin, R. W. ^{[1
]}

Liu, Bo ^{[1
]}

机构：

[1] ASTAR, Data Storage Inst, Res & Technol, Singapore 117608, Singapore

[2] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117576, Singapore

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2008年 / 44卷 / 11期

关键词：

Exchange coupling assisted media; exchange spring media; L1(o) phase FePt; perpendicular magnetic recording;

D O I：

10.1109/TMAG.2008.2002536

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Magnetic hard and soft phases FePtC thin films based exchange coupling assisted (ECA) perpendicular recording media were prepared. The coercivity of the FePtC film decreased after introducing a top magnetic soft FePtC layer. The cross-sectional transmission electron microscopy image illustrated that the soft FePt grains were located both on top of the bottom FePt grains and the grain boundaries, where the hard and soft grains were separated by a C layer accumulated on the hard FePtC layer surface. The reduction of coercivity was attributed to the exchange coupling between FePt hard and soft grains. For hard and soft grains separated by the accumulated C layer, the strength of the exchange coupling depended on the carbon layer thickness.

引用

页码：3547 / 3549

页数：3

共 11 条

[1] Low temperature deposited L10 FePt-C (001) films with high coercivity and small grain size [J].

Chen, J. S. ;

Lim, B. C. ;

Hu, J. F. ;

Liu, B. ;

Chow, G. M. ;

Ju, G. .

APPLIED PHYSICS LETTERS, 2007, 91 (13)

[2]

CHEN JS, 2007, APPL PHYS LETT, V90

[3]

CHEN JS, 2008, J APPL PHYS, V103

[4] L10 FePt films epitaxially grown on MgO substrates with or without a Cr underlayer [J].

Ding, Y. F. ;

Chen, J. S. ;

Liu, E. ;

Li, L. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 303 (02) :E238-E242

[5] Domain wall assisted magnetic recording [J].

Dobin, A. Yu. ;

Richter, H. J. .

APPLIED PHYSICS LETTERS, 2006, 89 (06)

[6] Experimental evidence of domain wall assisted switching in composite media [J].

Girt, Erol ;

Dobin, A. Yu. ;

Valcu, Bogdan ;

Richter, H. J. ;

Wu, X. ;

Nolan, Tomas P. .

IEEE TRANSACTIONS ON MAGNETICS, 2007, 43 (06) :2166-2168

[7] Exchange spring media for perpendicular recording -: art. no. 012504 [J].

Suess, D ;

Schrefl, T ;

Fähler, S ;

Kirschner, M ;

Hrkac, G ;

Dorfbauer, F ;

Fidler, J .

APPLIED PHYSICS LETTERS, 2005, 87 (01)

[8] Composite media for perpendicular magnetic recording [J].

Victora, RH ;

Shen, X .

IEEE TRANSACTIONS ON MAGNETICS, 2005, 41 (02) :537-542

[9] Fabrication and characterization of exchange coupled composite media [J].

Wang, Jian-Ping ;

Shen, Weikang ;

Hong, Soo-Youl .

IEEE TRANSACTIONS ON MAGNETICS, 2007, 43 (02) :682-686

[10] Composite media (dynamic tilted media) for magnetic recording [J].

Wang, JP ;

Shen, WK ;

Bai, JM ;

Victora, RH ;

Judy, JH ;

Song, WL .

APPLIED PHYSICS LETTERS, 2005, 86 (14) :1-3

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