Magnetization Loops in Fe/Ag/Fe/Ni (001) Structures

1993 ◽  
Vol 313 ◽  
Author(s):  
B. Heinrich ◽  
Z. Celiński ◽  
H. Konno ◽  
A. S. Arrott ◽  
M. Rührig ◽  
...  
Keyword(s):  
Magnetic Moment ◽  
Magnetization Reversal ◽  
Spin Valve ◽  
Layered Structures ◽  
Ultrathin Layers

ABSTRACTThe lattice reconstructed bec Ni (001) in Fe/Ni (001) ultrathin layers allows one to engineer films in which the in-plane 4-fold anisotropies and coercive fields can be varied and adjusted according to specific requirements. Magnetization reversals have been studied in layered structures of Fe/Ag/Fe/Ni (001). For Ag (001) interlayers thicker than 13 ML Magnetization reversal can proceed in two steps. In these samples the minor loops switch the magnetization of the Fe (001) layer from the parallel to the antiparallel configurations with respect to the magnetic moment of the Fe/Ni film. Such Minor loops exhibit a rectangular behavior with switching fields of 15–25 Oe. The lattice transformed Fe/Ni layers could be useful in spin-valve structures.

Experimental study of magnetization reversal processes in nonsymmetric spin valve

1997 ◽  
Vol 81 (8) ◽  
pp. 5215-5217 ◽  
Author(s):  
V. S. Gornakov ◽  
V. I. Nikitenko ◽  
L. H. Bennett ◽  
H. J. Brown ◽  
M. J. Donahue ◽  
...  
Keyword(s):  
Experimental Study ◽  
Magnetization Reversal ◽  
Spin Valve

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

scholarly journals Magnetic reversal dynamics of a quantum system on a picosecond timescale

2015 ◽  
Vol 6 ◽  
pp. 1946-1956 ◽  
Author(s):  
Nikolay V Klenov ◽  
Alexey V Kuznetsov ◽  
Igor I Soloviev ◽  
Sergey V Bakurskiy ◽  
Olga V Tikhonova
Keyword(s):  
Magnetic Moment ◽  
Magnetization Reversal ◽  
Quantum Mechanical ◽  
Magnetic Reversal ◽  
Level System ◽  
Macroscopic Theory ◽  
Atomic Systems ◽  
Quantum Mechanical Description ◽  
Classical Behavior ◽  
Flux Qubit

We present our approach for a consistent, fully quantum mechanical description of the magnetization reversal process in natural and artificial atomic systems by means of short magnetic pulses. In terms of the simplest model of a two-level system with a magnetic moment, we analyze the possibility of a fast magnetization reversal on the picosecond timescale induced by oscillating or short unipolar magnetic pulses. We demonstrate the possibility of selective magnetization reversal of a superconducting flux qubit using a single flux quantum-based pulse and suggest a promising, rapid Λ-scheme for resonant implementation of this process. In addition, the magnetization reversal treatment is fulfilled within the framework of the macroscopic theory of the magnetic moment, which allows for the comparison and explanation of the quantum and classical behavior.

Peculiarities of magnetic moment switching in the φ(0) junction

2021 ◽  
Author(s):  
Toktar Belgibayev ◽  
Yury Shukrinov ◽  
Andrej Plecenik ◽  
Jiri Pechousek ◽  
Cestmir Burdik
Keyword(s):  
Josephson Junction ◽  
Magnetic Moment ◽  
Magnetization Reversal ◽  
Characteristic Frequency ◽  
Easy Axis ◽  
Critical Value ◽  
Model Parameters ◽  
Memory Element ◽  
Superconducting Current ◽  
A Current

Abstract We have investigated the dynamics of magnetization under a current pulse in a φ0 - junction with a direct coupling between the magnetic moment and the superconducting current. The correspondence between the magnetization value at the end of the pulse mz * and the realization of the magnetization reversal along the easy axis of the ferromagnetic is considered. The crucial influence of the ratio w of the ferromagnetic frequency to the characteristic frequency of the Josephson junction on the results of reversal predictions is demonstrated. Effect of w magnitude on the manifestation of periodicity bands in the mz * dependence on the model parameters is shown. There is a critical value of the Gilbert damping, above which the magnetization reversal is not realized. It is shown that at small w the magnitude mz * can be as a criterion of magnetization reversal. I.e., if mz * <0, the magnetization reversal would happen with 100 percent probability. The results can be used in various areas of superconducting spintronics, in particular, to create a memory element based on the Josephson $ {\varphi_0} $ junction

Asymmetry of Magnetization Reversal of Pinned Layer in NiFe/Cu/NiFe/IrMn Spin-Valve Structure

2014 ◽  
Vol 27 (6) ◽  
pp. 1547-1552 ◽  
Author(s):  
N. G. Chechenin ◽  
P. N. Chernykh ◽  
S. A. Dushenko ◽  
I. O. Dzhun ◽  
A. Y. Goikhman ◽  
...  
Keyword(s):  
Magnetization Reversal ◽  
Spin Valve ◽  
Valve Structure

Thermal activation of magnetization reversal in spin-valve systems

2001 ◽  
Vol 89 (10) ◽  
pp. 5585-5591 ◽  
Author(s):  
T. Hughes ◽  
H. Laidler ◽  
K. O’Grady
Keyword(s):  
Magnetization Reversal ◽  
Thermal Activation ◽  
Spin Valve

Magnetization reversal and anisotropy in CoO/permalloy/Cu/permalloy/NiO layered structures

2001 ◽  
Vol 226-230 ◽  
pp. 1764-1766 ◽  
Author(s):  
C Prados ◽  
E Pina ◽  
P Crespo ◽  
M Alonso-Sañudo ◽  
F Cebollada ◽  
...  
Keyword(s):  
Magnetization Reversal ◽  
Layered Structures

Magnetization reversal mechanisms in NiFe/Cu/NiFe/FeMn spin‐valve structures

1995 ◽  
Vol 78 (9) ◽  
pp. 5554-5562 ◽  
Author(s):  
M. F. Gillies ◽  
J. N. Chapman ◽  
J. C. S. Kools
Keyword(s):  
Magnetization Reversal ◽  
Spin Valve
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