Effect of ultrahigh vacuum on ordering temperature, crystallographic and magnetic properties of L10 FePt(001) film on a CrRu underlayer

被引：14

作者：

Chen, JS ^{[1
]}

Lim, BC ^{[1
]}

Zhou, TJ ^{[1
]}

机构：

[1] NUS, Data Storage Inst, Singapore 117608, Singapore

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A | 2005年 / 23卷 / 01期

关键词：

D O I：

10.1116/1.1842112

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of ultrahigh vacuum on ordering temperature, crystallographic and magnetic properties of L1(0). FePt (001) film grown on a CrRu underlayer were investigated. The base pressure was adjusted by initially flushing with 99.99% purity nitrogen gas in vacuum system. The residual nitrogen gas in the deposition chamber causes the increase in the ordering temperature and the formation of face-centered-cubic-phase FePt grains in the films. Furthermore, the residual gas deteriorates the FePt (001) texture. Large uniaxial anisotropy constant K-u greater than or equal to 1 X 10(7) erg/cm(3), and good magnetic squareness (similar to1) were obtained at the temperature of T-s greater than or equal to 250degreesC when the base pressure is 3 X 10(-8) Torr. (C) 2005 American Vacuum Society.

引用

收藏

页码：184 / 189

页数：6

相关论文

共 17 条

[1] 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

[2] Effect of Pt buffer layer on structural and magnetic properties of FePt thin films [J].

Chen, JS ;

Xu, YF ;

Wang, JP .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (03) :1661-1665

[3]

Chikazumi S, 1997, PHYS FERROMAGNETISM, P495

[4] Magnetic, structural and microstructural properties of FePt/M (M = C, BN) granular films [J].

Christodoulides, JA ;

Farber, P ;

Daniil, M ;

Okumura, H ;

Hadjipanayis, GC ;

Skumryev, V ;

Simopoulos, A ;

Weller, D .

IEEE TRANSACTIONS ON MAGNETICS, 2001, 37 (04) :1292-1294

[5] NITROGEN-INDUCED FCC PHASE IN RF SPUTTERED CO-CR FILMS HAVING THE HCP PHASE AND PERPENDICULAR MAGNETIC-ANISOTROPY [J].

COUGHLIN, TM ;

WUORI, ER ;

JUDY, JH .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY, 1982, 20 (02) :171-174

[6] Effects of ultra-high vacuum on crystallographic, recording and magnetic properties of thin film media [J].

Gao, C ;

Wu, S ;

Chen, JP ;

Malmhall, R ;

Habermeier, C ;

Sinclair, R ;

Laidler, H ;

O'Grady, K .

IEEE TRANSACTIONS ON MAGNETICS, 1998, 34 (04) :1576-1578

[7] Effects of Ag underlayers on the microstructure and magnetic properties of epitaxial FePt thin films [J].

Hsu, YN ;

Jeong, S ;

Laughlin, DE ;

Lambeth, DN .

JOURNAL OF APPLIED PHYSICS, 2001, 89 (11) :7068-7070

[8] PROMOTION OF CUBIC GRAIN GROWTH IN 3-PERCENT SILICON IRON BY CONTROL OF ANNEALING ATMOSPHERE COMPOSITION [J].

KOHLER, D .

JOURNAL OF APPLIED PHYSICS, 1960, 31 (05) :S408-S409

[9] ENHANCED MAGNETOOPTIC KERR ROTATION IN EPITAXIAL PTFE(001) AND PTCO(001) THIN-FILMS [J].

LAIRSON, BM ;

CLEMENS, BM .

APPLIED PHYSICS LETTERS, 1993, 63 (10) :1438-1440

[10] Nanostructured FePt:B2O3 thin films with perpendicular magnetic anisotropy [J].

Luo, CP ;

Liou, SH ;

Gao, L ;

Liu, Y ;

Sellmyer, DJ .

APPLIED PHYSICS LETTERS, 2000, 77 (14) :2225-2227