Magnetization reversal dependence on magnetic properties of a spin torque oscillator with in-plane anisotropy free layer and orthogonal polarizer

2014 ◽  
Vol 14 (11) ◽  
pp. 1521-1525 ◽  
Author(s):  
R. Sbiaa
Keyword(s):  
Magnetic Properties ◽  
Magnetization Reversal ◽  
Spin Torque ◽  
Free Layer ◽  
Plane Anisotropy

scholarly journals Magnetization Dynamics in a Perpendicular Anisotropy Free Layer under a Spin Torque Effect with Crossed Polarization

2020 ◽  
Vol 25 (1) ◽  
pp. 54
Author(s):  
Nafeesa Rahman ◽  
Rachid Sbiaa
Keyword(s):  
Tunnel Junction ◽  
Magnetic Tunnel Junction ◽  
Film Plane ◽  
Spin Torque ◽  
Spin Angular Momentum ◽  
Perpendicular Anisotropy ◽  
Free Layer ◽  
Magnetization Dynamics ◽  
Magnetization Direction ◽  
Spin Polarized

The transfer of spin angular momentum from a spin polarized current provides an efficient way of reversing the magnetization direction of the free layer of the magnetic tunnel junction (MTJ), and while faster reversal will reduce the switching energy, this in turn will lead to low power consumption. In this work, we propose a design where a spin torque oscillator (STO) is integrated with a conventional magnetic tunnel junction (MTJ) which will assist in the ultrafast reversal of the magnetization of the free layer of the MTJ. The structure formed (MTJ stacked with STO), will have the free layer of the MTJ sandwiched between two spin polarizer layers, one with a fixed magnetization direction perpendicular to film plane (main static polarizer) and the other with an oscillatory magnetization (dynamic polarizer). The static polarizer is the fixed layer of the MTJ itself and the dynamic polarizer is the free layer of the STO.

scholarly journals Structure, Magnetic Properties and Magnetization Reversal Processes in Nanocrystalline Pr8Dy1Fe60Co7Mn6B14Zr1Ti3 Bulk Alloy

2019 ◽  
Vol 70 (11) ◽  
pp. 4086-4088
Keyword(s):  
Magnetic Properties ◽  
Magnetization Reversal ◽  
Exchange Interactions ◽  
Soft Magnetic ◽  
Bulk Alloy ◽  
Saturation Ratio ◽  
Pinning Mechanism ◽  
Strong Exchange ◽  
Xrd Studies ◽  
Bulk Alloys

The present paper presents results concerning on structure, magnetic properties and magnetization reversal processes in the as-cast Pr8Dy1Fe60Co7Mn6B14Zr1Ti3 alloy in the form of 1 mm plate. The XRD studies revealed coexistence of three phases dominant Pr2(Fe,Co)14B and minor á-Fe and Fe3B. The remanence-to-saturation ratio Jr/Js equaled 0.66 and indicated on existence of strong exchange interactions between hard and soft magnetic phases. The analysis of Mrev vs. Mirr dependences, the pinning mechanism was detected in studied alloy. Keywords: bulk alloys, magnetic properties, magnetization reversal processes

scholarly journals Особенности перемагничивания обменно-связанных пленочных структур Tb-Co/FeNi в температурном интервале, включающем точку компенсации ферримагнитного слоя

2021 ◽  
Vol 63 (9) ◽  
pp. 1198
Author(s):  
А.В. Свалов ◽  
В.Н. Лепаловский ◽  
Е.А. Степанова ◽  
И.А. Макарочкин ◽  
В.О. Васьковский ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetron Sputtering ◽  
Exchange Interaction ◽  
Wide Temperature Range ◽  
Magnetization Reversal ◽  
Compensation Temperature ◽  
Zeeman Energy ◽  
Temperature Range ◽  
Interlayer Exchange

The magnetic properties of exchange-coupled Tb-Co/FeNi film structures obtained by magnetron sputtering were studied in a wide temperature range. It was shown that a decrease in the Zeeman energy when approaching the compensation temperature of the ferrimagnetic layer was accompanied by a change in the sequence of magnetization reversal of the layers. The efficiency of the interlayer exchange interaction varies with temperature very little.

Impact of fluoride for hydroxide substitution on the magnetic properties of a Co-based single-ion magnet imbedded in the barium apatite crystal lattice

CrystEngComm ◽  
2019 ◽  
Vol 21 (7) ◽  
pp. 1193-1199 ◽  
Author(s):  
Mikhail A. Zykin ◽  
Artem A. Eliseev ◽  
Mariam A. Pogosova ◽  
Lev A. Trusov ◽  
Walter Schnelle ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Lattice ◽  
Magnetization Reversal ◽  
Energy Barrier ◽  
High Energy ◽  
Apatite Crystal ◽  
Atomic Group ◽  
High Energy Barrier

The atomic group O–Co–O persists in the apatite channel and retains a high energy barrier for magnetization reversal.

Modeling of the perpendicular polarizer-planar free layer spin torque oscillator: Micromagnetic simulations

2008 ◽  
Vol 78 (2) ◽  
Author(s):  
I. Firastrau ◽  
D. Gusakova ◽  
D. Houssameddine ◽  
U. Ebels ◽  
M.-C. Cyrille ◽  
...  
Keyword(s):  
Spin Torque ◽  
Free Layer ◽  
Micromagnetic Simulations
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