Magnetization switching behavior with competing anisotropies in epitaxial Co3FeN/MnN exchange-coupled bilayers

2016 ◽  
Vol 94 (18) ◽  
Author(s):  
T. Hajiri ◽  
T. Yoshida ◽  
S. Jaiswal ◽  
M. Filianina ◽  
B. Borie ◽  
...  
Keyword(s):  
Switching Behavior ◽  
Magnetization Switching ◽  
Coupled Bilayers

Temperature-Dependent Magnetization Switching in FeGd Ferrimagnets

SPIN ◽  
2018 ◽  
Vol 08 (03) ◽  
pp. 1850014 ◽  
Author(s):  
Zuwei Fu ◽  
Zongzhi Zhang ◽  
Yaowen Liu
Keyword(s):  
Laser Pulse ◽  
Pulse Duration ◽  
Spin Dynamic ◽  
Laser Pulses ◽  
Heating Time ◽  
Switching Process ◽  
Switching Behavior ◽  
Lattice Systems ◽  
Magnetization Switching ◽  
Random Switching

Laser-induced magnetization switching in GdFe ferrimagnets strongly depends on the pulse duration. To gain insight into the ferrimagnetic switching process, Landau–Lifshitz–Gilbert (LLG) spin dynamic modeling is performed at an atomistic-level with two sub-lattice systems. The switching dynamics triggered by laser pulses can be considered as two stages: Demagnetization stage by the laser pulse heating and re-magnetization at the cooling down stage after the pulse impulsion. By tuning the laser pulse duration, the intensity of demagnetization can be well controlled, by which the subsequent magnetization switching during the cooling process can be obtained. The simulation results indicate that the occurrence of the transient ferromagnetic-like (TFL) state is necessary during the magnetization switching process. Furthermore, the thermal temperature and heating time play an important role for the ferrimagnetic switching. In the overheating region, the random switching behavior appears because the TFL state is uncontrollable.

Effective Damping Constant and Current Induced Magnetization Switching of GdFeCo/TbFe Exchange-Coupled Bilayers

2016 ◽  
Vol 7 ◽  
pp. 1-5 ◽  
Author(s):  
Tomohiro Higashide ◽  
Bing Dai ◽  
Takeshi Kato ◽  
Daiki Oshima ◽  
Satoshi Iwata
Keyword(s):  
Magnetization Switching ◽  
Coupled Bilayers

Study of sense current effect on magnetization switching behavior from anomalous Hall effect in TbFeCo thin films

2019 ◽  
Vol 492 ◽  
pp. 165688 ◽  
Author(s):  
Ramesh Chandra Bhatt ◽  
Lin-Xiu Ye ◽  
Yi-Jyun Zou ◽  
Sheng-Zhe Ciou ◽  
Jong-Ching Wu ◽  
...  
Keyword(s):  
Thin Films ◽  
Hall Effect ◽  
Anomalous Hall Effect ◽  
Switching Behavior ◽  
Current Effect ◽  
Magnetization Switching

Magnetization switching behavior in nanostructured NiFe/Co/Cu/Co spin-valve

1998 ◽  
Vol 34 (4) ◽  
pp. 1102-1104 ◽  
Author(s):  
H. Asada ◽  
K. Matsuyama ◽  
Y. Hosokawa ◽  
K. Taniguchi
Keyword(s):  
Spin Valve ◽  
Switching Behavior ◽  
Magnetization Switching

Computer simulation of magnetization switching behavior in high-data-rate hard-disk media

2000 ◽  
Vol 36 (1) ◽  
pp. 154-158 ◽  
Author(s):  
M. Igarashi ◽  
F. Akagi ◽  
A. Nakamura ◽  
H. Ikekame ◽  
H. Takano ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Hard Disk ◽  
Data Rate ◽  
High Data Rate ◽  
Switching Behavior ◽  
Magnetization Switching ◽  
High Data

Magnetization switching behavior with microwave assistance

2008 ◽  
Vol 93 (10) ◽  
pp. 102506 ◽  
Author(s):  
S. Okamoto ◽  
N. Kikuchi ◽  
O. Kitakami
Keyword(s):  
Switching Behavior ◽  
Magnetization Switching ◽  
Microwave Assistance

scholarly journals Angular Dependence of Spin Transfer Switching in Spin Valve Nanopillar Based Heusler Alloy

2016 ◽  
Vol 2016 ◽  
pp. 1-7
Author(s):  
Pirat Khunkitti ◽  
Anan Kruesubthaworn ◽  
Arkom Kaewrawang ◽  
Tim Mewes ◽  
Claudia K. A. Mewes ◽  
...  
Keyword(s):  
Heusler Alloy ◽  
Spin Valve ◽  
Random Access ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Switching Behavior ◽  
Magnetization Switching ◽  
Low Frequencies ◽  
Power Spectral ◽  
High Density Recording

The spin transfer induced magnetization switching in current perpendicular-to-the-plane spin valve nanopillar based Co2FeAl0.5Si0.5Heusler alloy with varying the initial angles of the magnetization of sensing layer,θ0, was investigated via macrospin simulations. The effects of an in-plane magnetic field,Hi, on the switching behavior were also evaluated. The magnetization switching was excited by spin polarized switching current,Is. The time varying magnetization was computed by the Landau-Lifshitz-Gilbert-Slonczewski equation, while the spin transfer induced noise was examined by using the power spectral density analysis. It was found thatθ0should be narrowly initialized since this configuration produces the small noise during the switching. Also, the negativeIsproduced more uniform switching than the positiveIsdue to existence of ferromagnetic exchange coupling. WhenHiwas presented, the noise generated at low frequencies could be suppressed, and then the switching behavior became more uniform. In addition, the results indicated that the noise configuration could be explained by the physical dynamic of magnetization behavior. Hence, the spin transfer induced noise needs to be minimized in order to improve the performance of spin transfer torque random access memory for high density recording.

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