Structural and transport studies of stoichiometric and off-stoichiometric thin films of the full Heusler alloy Co2MnSi

被引：51

作者：

Singh, LJ

Barber, ZH

Miyoshi, Y

Branford, WR

Cohen, LF

机构：

[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 95卷 / 11期

关键词：

D O I：

10.1063/1.1667857

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Co2MnSi Heusler alloy thin films have been grown by cosputtering from three elemental targets. Changes in growth temperature and stoichiometry affect the film texture and the temperature dependence of the resistivity. However, the spin polarization of the transport current is insensitive to these changes, being of the order of 54% as determined by point contact Andreev reflection spectroscopy. Stoichiometric films are single phase, have a strong (110) texture, and a saturation magnetization of 1007 emu/cc (4.95 mu(B)/formula unit) at 10 K. (C) 2004 American Institute of Physics.

引用

收藏

页码：7231 / 7233

页数：3

相关论文

共 16 条

[1] Epitaxial growth and magnetic properties of single-crystal Co2MnGe Heusler alloy films on GaAs (001) [J].

Ambrose, T ;

Krebs, JJ ;

Prinz, GA .

APPLIED PHYSICS LETTERS, 2000, 76 (22) :3280-3282

[2] The magnetization distributions in some Heusler alloys proposed as half-metallic ferromagnets [J].

Brown, PJ ;

Neumann, KU ;

Webster, PJ ;

Ziebeck, KRA .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2000, 12 (08) :1827-1835

[3] Growth and magnetic properties of single crystal Co2MnX (X = Si, Ge) Heusler alloys [J].

Cheng, SF ;

Nadgorny, B ;

Bussmann, K ;

Carpenter, EE ;

Das, BN ;

Trotter, G ;

Raphael, MP ;

Harris, VG .

IEEE TRANSACTIONS ON MAGNETICS, 2001, 37 (04) :2176-2178

[4] NEW CLASS OF MATERIALS - HALF-METALLIC FERROMAGNETS [J].

DEGROOT, RA ;

MUELLER, FM ;

VANENGEN, PG ;

BUSCHOW, KHJ .

PHYSICAL REVIEW LETTERS, 1983, 50 (25) :2024-2027

[5] Structural, magnetic and magnetotransport properties of thin films of the Heusler alloys Cu2MnAl, Co2MnSi, Co2MnGe and Co2MnSn [J].

Geiersbach, U ;

Bergmann, A ;

Westerholt, K .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 240 (1-3) :546-549

[6] On the cross-over from half-metal to normal ferromagnet in NiMnSb [J].

Hordequin, C ;

Ristoiu, D ;

Ranno, L ;

Pierre, J .

EUROPEAN PHYSICAL JOURNAL B, 2000, 16 (02) :287-293

[7] Theoretical predicts of half-metallic compounds with the C1(b) structure [J].

Ishida, S ;

Masaki, T ;

Fujii, S ;

Asano, S .

PHYSICA B, 1997, 239 (1-2) :163-166

[8] Room-temperature preparation and magnetic behavior of Co2MnSi thin films [J].

Kämmerer, S ;

Heitmann, S ;

Meyners, D ;

Sudfeld, D ;

Thomas, A ;

Hütten, A ;

Reiss, G .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) :7945-7947

[9] Anomalous magnetotransport properties of epitaxial full Heusler alloys [J].

Lund, MS ;

Dong, JW ;

Lu, J ;

Dong, XY ;

Palmstrom, CJ ;

Leighton, C .

APPLIED PHYSICS LETTERS, 2002, 80 (25) :4798-4800

[10] Probing spin polarization with Andreev reflection: A theoretical basis [J].

Mazin, II ;

Golubov, AA ;

Nadgorny, B .

JOURNAL OF APPLIED PHYSICS, 2001, 89 (11) :7576-7578