Perpendicular Magnetic Anisotropy in CoFeB/Pd Bilayers

被引：34

作者：

Fowley, Ciaran ^{[1
]}

Decorde, Nicolas ^{[1
]}

Oguz, Kaan ^{[1
]}

Rode, Karsten ^{[1
]}

Kurt, Huseyin ^{[1
]}

Coey, J. M. D. ^{[1
]}

机构：

[1] Trinity Coll Dublin, Sch Phys, CRANN, Dublin 2, Ireland

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 06期

基金：

爱尔兰科学基金会;

关键词：

Perpendicular magnetic anisotropy (PMA); thin-film capacitors; PD/CO;

D O I：

10.1109/TMAG.2010.2044374

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：

Perpendicular magnetic anisotropy is observed in ultrathin (0.6 nm) amorphous Co40Fe40B20 when sputtered on an MgO (001) buffer layer and capped with Pd. The layers are superparamagnetic with a blocking temperature of similar to 230 K, below which they show an exponential temperature dependence of coercivity. Perpendicular magnetic anisotropy is observed in the as-deposited state and the mechanism is different from that of CoFeB/Pt, which requires postannealing. These ultrathin layers could be a model system for studies of electric field effects on magnetic anisotropy.

引用

页码：2116 / 2118

页数：3

共 16 条

[1] Large magnetic moment enhancement and extraordinary Hall effect in Co/Pt superlattices [J].

Canedy, CL ;

Li, XW ;

Xiao, G .

PHYSICAL REVIEW B, 2000, 62 (01) :508-519

[2] PERPENDICULAR MAGNETIC-ANISOTROPY IN PD/CO AND PT/CO THIN-FILM LAYERED STRUCTURES [J].

CARCIA, PF .

JOURNAL OF APPLIED PHYSICS, 1988, 63 (10) :5066-5073

[3] Characterization of CoFeB electrodes for tunnel junctions [J].

Cardoso, S ;

Cavaco, C ;

Ferreira, R ;

Pereira, L ;

Rickart, M ;

Freitas, PP ;

Franco, N ;

Gouveia, J ;

Barradas, NP .

JOURNAL OF APPLIED PHYSICS, 2005, 97 (10)

[4] MAGNETIC INTERFACE ANISOTROPY IN PD/CO AND PD/FE MULTILAYERS [J].

DRAAISMA, HJG ;

DEJONGE, WJM ;

DENBROEDER, FJA .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1987, 66 (03) :351-355

[5] MgO-based double barrier magnetic tunnel junctions with thin free layers [J].

Feng, G. ;

van Dijken, Sebastiaan ;

Coey, J. M. D. .

JOURNAL OF APPLIED PHYSICS, 2009, 105 (07)

[6]

JANG Y, 2006, APPL PHYS LETT, V8

[7] Analysis of oxygen induced anisotropy crossover in Pt/Co/MOx trilayers [J].

Manchon, A. ;

Ducruet, C. ;

Lombard, L. ;

Auffret, S. ;

Rodmacq, B. ;

Dieny, B. ;

Pizzini, S. ;

Vogel, J. ;

Uhlir, V. ;

Hochstrasser, M. ;

Panaccione, G. .

JOURNAL OF APPLIED PHYSICS, 2008, 104 (04)

[8] Reducing the critical current for spin-transfer switching of perpendicularly magnetized nanomagnets [J].

Mangin, S. ;

Henry, Y. ;

Ravelosona, D. ;

Katine, J. A. ;

Fullerton, Eric E. .

APPLIED PHYSICS LETTERS, 2009, 94 (01)

[9]

Maruyama T, 2009, NAT NANOTECHNOL, V4, P158, DOI [10.1038/nnano.2008.406, 10.1038/NNANO.2008.406]

[10] Pt/Co/oxide and oxide/Co/Pt electrodes for perpendicular magnetic tunnel junctions [J].

Nistor, L. E. ;

Rodmacq, B. ;

Auffret, S. ;

Dieny, B. .

APPLIED PHYSICS LETTERS, 2009, 94 (01)

← 1 2 →