scholarly journals Optically excited spin pumping mediating collective magnetization dynamics in a spin valve structure

2018 ◽  
Vol 98 (6) ◽  
Author(s):  
A. P. Danilov ◽  
A. V. Scherbakov ◽  
B. A. Glavin ◽  
T. L. Linnik ◽  
A. M. Kalashnikova ◽  
...  
Keyword(s):  
Spin Valve ◽  
Magnetization Dynamics ◽  
Spin Pumping ◽  
Valve Structure

scholarly journals Частота и быстродействие спинового вентиля с планарной анизотропией слоев

2020 ◽  
Vol 62 (9) ◽  
pp. 1361
Author(s):  
Ю.А. Юсипова
Keyword(s):  
Spin Valve ◽  
Practical Interest ◽  
Magnetization Vector ◽  
Magnetization Dynamics ◽  
Operating Modes ◽  
Read Head ◽  
Ferromagnetic Layers ◽  
Valve Structure ◽  
Switching Characteristics ◽  
Layered Spin

The dynamics of the magnetization vector in the free layer of a layered spin-valve structure was simulated. As materials for the free and fixed layers, six magnetically soft ferromagnets with longitudinal anisotropy were considered. The types of magnetization dynamics that are of practical interest for MRAM and HMDD (switching of the magnetization vector), STNO (stable precession of the magnetization vector), and the base element PSL (switching of the magnetization vector with two probable outcomes) were highlighted. The ranges of currents and fields corresponding to these operating modes of the spin valve were calculated. The numerical calculations of the switching time showed that, among the considered materials for the MRAM cell, the most suitable is Co80Gd20 alloy, while for the HMDD read head, it is Fe60Co20B20. As a result of the precession frequency calculations, it was concluded that the Fe60Co20B20 alloy is optimal for the STNO ferromagnetic layers. For the implementation of PSL, the best switching characteristics were demonstrated by the Co93Gd7 alloy.

Effect of probe configuration on spin accumulation in lateral spin-valve structure

2005 ◽  
Vol 286 ◽  
pp. 88-90 ◽  
Author(s):  
T. Kimura ◽  
J. Hamrle ◽  
Y. Otani ◽  
K. Tsukagoshi ◽  
Y. Aoyagi
Keyword(s):  
Spin Valve ◽  
Spin Accumulation ◽  
Valve Structure

Layer selective magnetic moment distribution in an epitaxial double spin valve structure: Si[001]/Cu

1999 ◽  
Vol 35 (5) ◽  
pp. 3847-3849 ◽  
Author(s):  
B.C. Choi ◽  
A. Samad ◽  
W.Y. Lee ◽  
S. Langridge ◽  
J. Penfold ◽  
...  
Keyword(s):  
Magnetic Moment ◽  
Spin Valve ◽  
Double Spin ◽  
Moment Distribution ◽  
Valve Structure

Improved Thermal Stability of Gmr Spin Valve Films

1995 ◽  
Vol 384 ◽  
Author(s):  
R. D. Mcmichael ◽  
W. F. Egelhoff ◽  
Minh Ha
Keyword(s):  
Thermal Stability ◽  
Layer Thickness ◽  
Annealing Time ◽  
General Structure ◽  
Spin Valve ◽  
Square Root ◽  
Magnetic Multilayer ◽  
Valve Structure ◽  
Thermal Stability Of

ABSTRACTIn order to improve the thermal stability of magnetic multilayer “spin valve” structures, we have measured the magnetic and magnetoresistive properties of a number of samples with the general structure of NiO/Co/Cu/Co/Cu/Co/NiO as a function of annealing time at 250 °C. The magnetoresistance (MR) of the samples annealed in air decreases proportionally to the square root of the annealing time. For samples annealed in a vacuum, the decrease in magnetoresistance is reduced, but not eliminated. Magnetometry of a vacuum annealed NiO/Co/NiO sample shows a magnetization reduction and a coercivity increase which suggest oxidation of the NiO-biased “outer” Co layers of the spin valve structure. For increasing NiObiased Co layer thickness, we show enhanced thermal stability and even increasing MR with annealing time for samples with the thickest outer Co layers.

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