scholarly journals Critical current density of a spin-torque oscillator with an in-plane magnetized free layer and an out-of-plane magnetized polarizer

AIP Advances ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 125033 ◽  
Author(s):  
R. Matsumoto ◽  
H. Imamura
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Spin Torque ◽  
Free Layer ◽  
Out Of Plane

Reduction in critical current density for spin torque transfer switching with composite free layer

2008 ◽  
Vol 93 (9) ◽  
pp. 092504 ◽  
Author(s):  
Cheng-Tyng Yen ◽  
Wei-Chuan Chen ◽  
Ding-Yeong Wang ◽  
Yuan-Jen Lee ◽  
Chih-Ta Shen ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Spin Torque ◽  
Free Layer ◽  
Spin Torque Transfer

scholarly journals Micromagnetic Simulation of Strain-Assisted Current-Induced Magnetization Switching

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
H. B. Huang ◽  
C. P. Zhao ◽  
X. Q. Ma
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Phase Field ◽  
Tunnel Junctions ◽  
Magnetic Domain ◽  
Misfit Strain ◽  
Micromagnetic Simulation ◽  
Magnetization Switching ◽  
Out Of Plane

We investigated the effect of substrate misfit strain on the current-induced magnetization switching in magnetic tunnel junctions by combining micromagnetic simulation with phase-field microelasticity theory. Our results indicate that the positive substrate misfit strain can decrease the critical current density of magnetization switching by pushing the magnetization from out-of-plane to in-plane directions, while the negative strain pushes the magnetization back to the out-of-plane directions. The magnetic domain evolution is obtained to demonstrate the strain-assisted current-induced magnetization switching.

High critical current density YBa2Cu3O7δ thick films using ion beam assisted deposition MgO bi-axially oriented template layers on nickel-based superalloy substrates

2001 ◽  
Vol 16 (8) ◽  
pp. 2175-2178 ◽  
Author(s):  
J. R. Groves ◽  
P. N. Arendt ◽  
S. R. Foltyn ◽  
Q. X. Jia ◽  
T. G. Holesinger ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Ion Beam ◽  
Continuous Process ◽  
Coated Conductors ◽  
Nickel Based Superalloy ◽  
Ion Beam Assisted Deposition ◽  
Out Of Plane ◽  
Amorphous Si

Nickel-based superalloys have been coated with magnesium oxide (MgO) using ion-beam-assisted deposition (IBAD). This technique produced a well-oriented bi-axially textured MgO template layer with a Ф scan full width half maximum of 6.4°. The layer architecture for these samples was as follows: polished hastelloy C276/amorphous Si3N4/IBAD MgO/ pulsed laser deposited (PLD) Y2O3–ZrO2/PLD CeO2/PLD YBa2Cu3O7?δ. The subsequent heteroepitaxial PLD of 1.5-mm-thick YBCO showed a nominal critical current density of over 1 MA/cm2 (75 K, self-field) along a microbridge and had an in-plane mosaic spread of 4.8° and an out-of-plane spread of 1.3°. These results compare well with our earlier work using IBAD yttria-stabilized zirconia (YSZ) as a template layer and indicate that IBAD MgO is a suitable substitute. Furthermore, these results suggest that IBAD MgO could be adapted to and increase the feasibility of a continuous process to fabricate longer lengths of coated conductors at speeds 100 times faster than that previously realized with IBAD YSZ.

Reduction in critical current density by tuning damping constants of CoFeB for spin-torque-transfer switching

2009 ◽  
Vol 42 (11) ◽  
pp. 115006 ◽  
Author(s):  
Chih-Liang Wang ◽  
Sheng-Huang Huang ◽  
Chih-Huang Lai ◽  
Wei-Chuan Chen ◽  
Shan-Yi Yang ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Spin Torque ◽  
Spin Torque Transfer

Effect of interlayer exchange coupling parameter on switching time and critical current density in composite free layer

2014 ◽  
Vol 115 (17) ◽  
pp. 17D111 ◽  
Author(s):  
Amritpal Singh ◽  
Subhadra Gupta ◽  
Majd Kuteifan ◽  
Marko Lubarda ◽  
Vitaliy Lomakin ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Exchange Coupling ◽  
Switching Time ◽  
Coupling Parameter ◽  
Interlayer Exchange Coupling ◽  
Free Layer ◽  
Interlayer Exchange
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