Strongly suppressed 1/f noise and enhanced magnetoresistance in epitaxial Fe-V/MgO/Fe magnetic tunnel junctions

被引：28
作者：
Herranz, D. [1 ]
Bonell, F. [2 ]
Gomez-Ibarlucea, A. [1 ]
Andrieu, S. [2 ]
Montaigne, F. [2 ]
Villar, R. [1 ]
Tiusan, C. [2 ]
Aliev, F. G. [1 ]
机构：
[1] Univ Autonoma Madrid, Dpto Fis Mat Condensada, CIII, E-28049 Madrid, Spain
[2] Univ Nancy 1, CNRS, Inst Jean Lamour, F-54506 Vandoeuvre Les Nancy, France
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 20期
关键词：
1; f noise; iron; iron alloys; magnesium compounds; tunnelling magnetoresistance; vanadium alloys; ROOM-TEMPERATURE; MGO;
D O I：
10.1063/1.3430064
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Alloying Fe electrodes with V, through reduced FeV/MgO interface mismatch in epitaxial magnetic tunnel junctions with MgO barriers, notably suppresses both nonmagnetic (parallel) and magnetic (antiparallel) state 1/f noise and enhances tunneling magnetoresistance. A comparative study of the room temperature electron transport and low frequency noise in Fe1-xVx/MgO/Fe and Fe/MgO/Fe1-xVx magnetic tunnel junctions with 0 <= x <= 0.25 reveals that V doping of the bottom electrode for x < 0.1 reduces in nearly two orders of magnitude the normalized nonmagnetic and magnetic 1/f noise. We attribute the enhanced TMR and suppressed 1/f noise to strongly reduced misfit and dislocation density. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3430064]
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页数：3
相关论文
共 18 条
[1]   Very low 1/f noise at room temperature in fully epitaxial Fe/MgO/Fe magnetic tunnel junctions [J].
Aliev, F. G. ;
Guerrero, R. ;
Herranz, D. ;
Villar, R. ;
Greullet, F. ;
Tiusan, C. ;
Hehn, M. .
APPLIED PHYSICS LETTERS, 2007, 91 (23)
[2]   MgO-Based Epitaxial Magnetic Tunnel Junctions Using Fe-V Electrodes [J].
Bonell, Frederic ;
Andrieu, Stephane ;
Bertran, Francois ;
Lefevre, Patrick ;
Ibrahimi, Amina Taleb ;
Snoeck, Etienne ;
Tiusan, Coriolan-Viorel ;
Montaigne, Francois .
IEEE TRANSACTIONS ON MAGNETICS, 2009, 45 (10) :3467-3471
[3]   Large magnetoresistance in Fe/MgO/FeCo(001) epitaxial tunnel junctions on GaAs(001) [J].
Bowen, M ;
Cros, V ;
Petroff, F ;
Fert, A ;
Boubeta, CM ;
Costa-Krämer, JL ;
Anguita, JV ;
Cebollada, A ;
Briones, F ;
de Teresa, JM ;
Morellón, L ;
Ibarra, MR ;
Güell, F ;
Peiró, F ;
Cornet, A .
APPLIED PHYSICS LETTERS, 2001, 79 (11) :1655-1657
[4]   Spin-dependent tunneling conductance of Fe|MgO|Fe sandwiches -: art. no. 054416 [J].
Butler, WH ;
Zhang, XG ;
Schulthess, TC ;
MacLaren, JM .
PHYSICAL REVIEW B, 2001, 63 (05)
[5]   LOW-FREQUENCY FLUCTUATIONS IN SOLIDS - 1-F NOISE [J].
DUTTA, P ;
HORN, PM .
REVIEWS OF MODERN PHYSICS, 1981, 53 (03) :497-516
[6]   High tunnel magnetoresistance in epitaxial Fe/MgO/Fe tunnel junctions [J].
Faure-Vincent, J ;
Tiusan, C ;
Jouguelet, E ;
Canet, F ;
Sajieddine, M ;
Bellouard, C ;
Popova, E ;
Hehn, M ;
Montaigne, F ;
Schuhl, A .
APPLIED PHYSICS LETTERS, 2003, 82 (25) :4507-4509
[7]   High bias voltage effect on spin-dependent conductivity and shot noise in carbon-doped Fe(001)/MgO(001)/Fe(001) magnetic tunnel junctions [J].
Guerrero, R. ;
Herranz, D. ;
Aliev, F. G. ;
Greullet, F. ;
Tiusan, C. ;
Hehn, M. ;
Montaigne, F. .
APPLIED PHYSICS LETTERS, 2007, 91 (13)
[8]   Low-frequency noise and tunneling magnetoresistance in Fe(110)/MgO(111)/Fe(110) epitaxial magnetic tunnel junctions -: art. no. 042501 [J].
Guerrero, R ;
Aliev, FG ;
Villar, R ;
Hauch, J ;
Fraune, M ;
Güntherodt, G ;
Rott, K ;
Brückl, H ;
Reiss, G .
APPLIED PHYSICS LETTERS, 2005, 87 (04)
[9]   THE SLATER-PAULING CURVE - 1ST PRINCIPLES CALCULATIONS OF THE MOMENTS OF FE1-CNIC AND V1-CFEC [J].
JOHNSON, DD ;
PINSKI, FJ ;
STAUNTON, JB .
JOURNAL OF APPLIED PHYSICS, 1987, 61 (08) :3715-3717
[10]   Theory of tunneling magnetoresistance of an epitaxial Fe/MgO/Fe(001) junction [J].
Mathon, J ;
Umerski, A .
PHYSICAL REVIEW B, 2001, 63 (22)
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