Current-induced switching of exchange bias in nano-scaled magnetic tunnel junctions with a synthetic antiferromagnetic pinned layer

2012 ◽  
Vol 111 (7) ◽  
pp. 07B103 ◽  
Author(s):  
C. T. Chao ◽  
C. Y. Kuo ◽  
Lance Horng ◽  
M. Tsunoda ◽  
M. Takahashi ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions

PERPENDICULAR EXCHANGE-BIAS INDUCED BY A DISCONTINUOUS Ru LAYER IN Co90Fe10/Ru/Co90Fe10/FeMn MULTILAYERS

2011 ◽  
Vol 25 (11) ◽  
pp. 1493-1499
Author(s):  
JIN BAO ◽  
XIAO-GUANG XU ◽  
XIAO-QI LI ◽  
DE-LIN ZHANG ◽  
YONG JIANG
Keyword(s):  
Magnetron Sputtering ◽  
Exchange Bias ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Spin Valves ◽  
Dc Magnetron Sputtering

A series of Co 90 Fe 10/ Ru/Co 90 Fe 10/ FeMn multilayers were fabricated by DC magnetron sputtering. Our results show that the in-plane and perpendicular exchange-bias fields H ex of the multilayers can be controlled by the continuity of the Ru layer. Increasing the continuity of the Ru layer increases the in-plane H ex and decreases the perpendicular one. When the thickness of the Ru layer is 0.5 nm, the perpendicular H ex reaches as high as 682 Oe. The perpendicular exchange-bias induced by a discontinuous underlayer may be applied in future perpendicular anisotropic spin valves or magnetic tunnel junctions.

Influence of ion bombardment on transport properties and exchange bias in magnetic tunnel junctions

2003 ◽  
Vol 94 (9) ◽  
pp. 5556-5558 ◽  
Author(s):  
J. Schmalhorst ◽  
V. Höink ◽  
G. Reiss ◽  
D. Engel ◽  
D. Junk ◽  
...  
Keyword(s):  
Transport Properties ◽  
Exchange Bias ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Ion Bombardment

Large Exchange Bias IrMn/CoFe for Magnetic Tunnel Junctions

2008 ◽  
Vol 44 (11) ◽  
pp. 2824-2827 ◽  
Author(s):  
L.E. Fernandez-Outon ◽  
K. O'Grady ◽  
S. Oh ◽  
M. Zhou ◽  
M. Pakala
Keyword(s):  
Exchange Bias ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions

scholarly journals Exchange bias effect in martensitic epitaxial Ni-Mn-Sn thin films applied to pin CoFeB/MgO/CoFeB magnetic tunnel junctions

2015 ◽  
Vol 106 (19) ◽  
pp. 192401 ◽  
Author(s):  
N. Teichert ◽  
A. Boehnke ◽  
A. Behler ◽  
B. Weise ◽  
A. Waske ◽  
...  
Keyword(s):  
Thin Films ◽  
Exchange Bias ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Bias Effect ◽  
Exchange Bias Effect

Postannealing of magnetic tunnel junctions with ion-bombardment-modified exchange bias

2005 ◽  
Vol 86 (15) ◽  
pp. 152102 ◽  
Author(s):  
V. Höink ◽  
M. D. Sacher ◽  
J. Schmalhorst ◽  
G. Reiss ◽  
D. Engel ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Ion Bombardment

Structural and magneto-transport properties of lattice-mismatched epitaxial Fe/SrO/MgO/Fe magnetic tunnel junctions

2020 ◽  
Vol 59 (10) ◽  
pp. 103001
Author(s):  
Aurelie Spiesser ◽  
Shintaro Kon ◽  
Yukiko Yasukawa ◽  
Shinji Yuasa ◽  
Hiroshi Imamura ◽  
...  
Keyword(s):  
Transport Properties ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions

scholarly journals Electrical characterisation of higher order spin wave modes in vortex-based magnetic tunnel junctions

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Alex. S. Jenkins ◽  
Lara San Emeterio Alvarez ◽  
Samh Memshawy ◽  
Paolo Bortolotti ◽  
Vincent Cros ◽  
...  
Keyword(s):  
Spin Wave ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Higher Order ◽  
Spin Torque ◽  
Micromagnetic Simulations ◽  
Higher Order Modes ◽  
Spin Diode ◽  
Super High Frequency ◽  
Wave Modes

AbstractNiFe-based vortex spin-torque nano-oscillators (STNO) have been shown to be rich dynamic systems which can operate as efficient frequency generators and detectors, but with a limitation in frequency determined by the gyrotropic frequency, typically sub-GHz. In this report, we present a detailed analysis of the nature of the higher order spin wave modes which exist in the Super High Frequency range (3–30 GHz). This is achieved via micromagnetic simulations and electrical characterisation in magnetic tunnel junctions, both directly via the spin-diode effect and indirectly via the measurement of the coupling with the gyrotropic critical current. The excitation mechanism and spatial profile of the modes are shown to have a complex dependence on the vortex core position. Additionally, the inter-mode coupling between the fundamental gyrotropic mode and the higher order modes is shown to reduce or enhance the effective damping depending upon the sense of propagation of the confined spin wave.

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