Chemical order induced by ion irradiation in FePt (001) films

被引：129

作者：

Ravelosona, D ^{[1
]}

Chappert, C

Mathet, V

Bernas, H

机构：

[1] Univ Paris Sud, Inst Electron Fondamentale, F-91405 Orsay, France

[2] Univ Paris Sud, Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France

来源：

APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 02期

关键词：

D O I：

10.1063/1.125713

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate that the long-range order parameter S of sputtered FePt (001) films may be improved by using postgrowth He ion irradiation. This was demonstrated both on disordered (S similar to 0) and partially ordered (S similar to 0.4) films in which S was increased up to 0.3 and 0.6, respectively. X-ray diffraction analysis showed that these changes are due to irradiation-induced chemical ordering. The changes in the magnetic hysteresis loops correlate with the expected perpendicular magnetic anisotropy increase. This method may find applications in ultrahigh-density magnetic recording. (C) 2000 American Institute of Physics. [S0003-6951(00)02702-9].

引用

页码：236 / 238

页数：3

共 17 条

[1] MAGNETIC DOMAIN STRUCTURES IN THIN UNIAXIAL PLATES WITH PERPENDICULAR EASY AXIS [J].

CAPE, JA ;

LEHMAN, GW .

JOURNAL OF APPLIED PHYSICS, 1971, 42 (13) :5732-+

[2] The influence of the Pt buffer layer on the perpendicular magnetic anisotropy in epitaxial FePd(001) ordered alloys grown by sputtering [J].

Caro, P ;

Cebollada, A ;

Ravelosona, D ;

Briones, F ;

Garcia, D ;

Vazquez, M ;

Hernando, A .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :5050-5052

[3] Structure and chemical order in sputtered epitaxial FePd(0 0 1) alloys [J].

Caro, P ;

Cebollada, A ;

Briones, F ;

Toney, MF .

JOURNAL OF CRYSTAL GROWTH, 1998, 187 (3-4) :426-434

[4] ENHANCED MAGNETOOPTICAL KERR-EFFECT IN SPONTANEOUSLY ORDERED FEPT ALLOYS - QUANTITATIVE AGREEMENT BETWEEN THEORY AND EXPERIMENT [J].

CEBOLLADA, A ;

WELLER, D ;

STICHT, J ;

HARP, GR ;

FARROW, RFC ;

MARKS, RF ;

SAVOY, R ;

SCOTT, JC .

PHYSICAL REVIEW B, 1994, 50 (05) :3419-3422

[5] Planar patterned magnetic media obtained by ion irradiation [J].

Chappert, C ;

Bernas, H ;

Ferré, J ;

Kottler, V ;

Jamet, JP ;

Chen, Y ;

Cambril, E ;

Devolder, T ;

Rousseaux, F ;

Mathet, V ;

Launois, H .

SCIENCE, 1998, 280 (5371) :1919-1922

[6] HIGH ANISOTROPY L1(0) THIN-FILMS FOR LONGITUDINAL RECORDING [J].

COFFEY, KR ;

PARKER, MA ;

HOWARD, JK .

IEEE TRANSACTIONS ON MAGNETICS, 1995, 31 (06) :2737-2739

[7] Magnetic anisotropy and microstructure in molecular beam epitaxial FePt(110)/MgO(110) [J].

Farrow, RFC ;

Weller, D ;

Marks, RF ;

Toney, MF ;

Smith, DJ ;

McCartney, MR .

JOURNAL OF APPLIED PHYSICS, 1998, 84 (02) :934-939

[8] Control of the axis of chemical ordering and magnetic anisotropy in epitaxial FePt films [J].

Farrow, RFC ;

Weller, D ;

Marks, RF ;

Toney, MF ;

Cebollada, A ;

Harp, GR .

JOURNAL OF APPLIED PHYSICS, 1996, 79 (08) :5967-5969

[9] Growth temperature dependence of long-range alloy order and magnetic properties of epitaxial FexPt1-x (x similar or equal to 0.5) films [J].

Farrow, RFC ;

Weller, D ;

Marks, RF ;

Toney, MF ;

Horn, S ;

Harp, GR ;

Cebollada, A .

APPLIED PHYSICS LETTERS, 1996, 69 (08) :1166-1168

[10] Magnetic domains in epitaxial ordered FePd(001) thin films with perpendicular magnetic anisotropy [J].

Gehanno, V ;

Marty, A ;

Gilles, B ;

Samson, Y .

PHYSICAL REVIEW B, 1997, 55 (18) :12552-12555

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