Magnetic Anisotropy and Magnetization Reversal in Self-Organized Two-Dimensional Nanomagnets

2018 ◽  
pp. 193-211
Author(s):  
Vincent Repain
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetization Reversal ◽  
Two Dimensional ◽  
Self Organized

Current-assisted magnetization reversal in Fe3GeTe2 van der Waals homojunctions

Nanoscale ◽  
2022 ◽  
Author(s):  
Hailong Lin ◽  
Faguang Yan ◽  
Ce Hu ◽  
Yuanhui Zheng ◽  
Yu Sheng ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Magnetic Anisotropy ◽  
Magnetic Materials ◽  
Magnetization Reversal ◽  
Van Der Waals ◽  
Perpendicular Magnetic Anisotropy ◽  
High Curie Temperature ◽  
Two Dimensional

Among the numerous two-dimensional van der Waals (vdW) magnetic materials, Fe3GeTe2 (FGT), due to its outstanding properties such as metallicity, high Curie temperature and strong perpendicular magnetic anisotropy, quickly emerged...

Magnetization dynamics of irradiation-fabricated perpendicularly magnetized dots inside a softer magnetic matrix

2003 ◽  
Vol 777 ◽  
Author(s):  
T. Devolder ◽  
M. Belmeguenai ◽  
C. Chappert ◽  
H. Bernas ◽  
Y. Suzuki
Keyword(s):  
Domain Wall ◽  
Magnetic Anisotropy ◽  
Magnetization Reversal ◽  
Ion Irradiation ◽  
Magnetic Nanostructures ◽  
Magnetic Storage ◽  
Exchange Field ◽  
Static Magnetization ◽  
Specific Domain ◽  
Helium Ion

AbstractGlobal Helium ion irradiation can tune the magnetic properties of thin films, notably their magneto-crystalline anisotropy. Helium ion irradiation through nanofabricated masks can been used to produce sub-micron planar magnetic nanostructures of various types. Among these, perpendicularly magnetized dots in a matrix of weaker magnetic anisotropy are of special interest because their quasi-static magnetization reversal is nucleation-free and proceeds by a very specific domain wall injection from the magnetically “soft” matrix, which acts as a domain wall reservoir for the “hard” dot. This guarantees a remarkably weak coercivity dispersion. This new type of irradiation-fabricated magnetic device can also be designed to achieve high magnetic switching speeds, typically below 100 ps at a moderate applied field cost. The speed is obtained through the use of a very high effective magnetic field, and high resulting precession frequencies. During magnetization reversal, the effective field incorporates a significant exchange field, storing energy in the form of a domain wall surrounding a high magnetic anisotropy nanostructure's region of interest. The exchange field accelerates the reversal and lowers the cost in reversal field. Promising applications to magnetic storage are anticipated.

Structure and magnetization reversal mechanism in L10 FePt films with perpendicular magnetic anisotropy

2012 ◽  
Vol 520 (17) ◽  
pp. 5746-5751 ◽  
Author(s):  
S.J. Zhang ◽  
Jian-Guo Zheng ◽  
Z. Shi ◽  
S.M. Zhou ◽  
L. Sun ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetization Reversal ◽  
Perpendicular Magnetic Anisotropy ◽  
Reversal Mechanism

On the symmetry of self‐organized structures in two‐dimensional turbulence

1995 ◽  
Vol 7 (9) ◽  
pp. 2108-2110 ◽  
Author(s):  
B. Jüttner ◽  
A. Thess ◽  
J. Sommeria
Keyword(s):  
Two Dimensional ◽  
Self Organized

Magnetic properties of two-dimensional Josephson networks: Self-organized criticality in magnetic flux dynamics

JETP Letters ◽  
2000 ◽  
Vol 72 (1) ◽  
pp. 26-29 ◽  
Author(s):  
S. M. Ishikaev ◽  
É. V. Matizen ◽  
V. V. Ryazanov ◽  
V. A. Oboznov ◽  
A. V. Veretennikov
Keyword(s):  
Magnetic Properties ◽  
Magnetic Flux ◽  
Two Dimensional ◽  
Flux Dynamics ◽  
Self Organized ◽  
Self Organized Criticality

Large four-fold magnetic anisotropy in two-dimensional modulated Ni80Fe20 films

2015 ◽  
Vol 107 (23) ◽  
pp. 232402 ◽  
Author(s):  
G. N. Kakazei ◽  
X. M. Liu ◽  
J. Ding ◽  
V. O. Golub ◽  
O. Y. Salyuk ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Two Dimensional

scholarly journals Extra investigation of the self-organized critical Manna model at higher critical dimension

2021 ◽  
pp. 1-12
Author(s):  
Andrey Viktorovich Podlazov
Keyword(s):  
Power Law ◽  
Critical Dimension ◽  
The Self ◽  
Two Dimensional ◽  
Upper Critical Dimension ◽  
Self Organized ◽  
Logarithmic Corrections ◽  
Universal Indicator ◽  
Sandpile Models ◽  
Power Law Distributions

I investigate the nature of the upper critical dimension for isotropic conservative sandpile models and calculate the emerging logarithmic corrections to power-law distributions. I check the results experimentally using the case of Manna model with the theoretical solution known for all statement starting from the two-dimensional one. In addition, based on this solution, I construct a non-trivial super-universal indicator for this model. It characterizes the distribution of avalanches by time the border of their region needs to pass its width.

Two dimensional self-organized transitions for propagation in random media

1996 ◽  
Vol 46 (S4) ◽  
pp. 2277-2278
Author(s):  
M. Ausloos ◽  
N. Vandewalle ◽  
R. Cloots
Keyword(s):  
Random Media ◽  
Two Dimensional ◽  
Self Organized
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