scholarly journals Magnetic vortex nucleation/annihilation in artificial-ferrimagnet microdisks

2017 ◽  
Vol 122 (8) ◽  
pp. 083903 ◽  
Author(s):  
Pavel N. Lapa ◽  
Junjia Ding ◽  
Charudatta Phatak ◽  
John E. Pearson ◽  
J. S. Jiang ◽  
...  
Keyword(s):  
Magnetic Vortex ◽  
Vortex Nucleation

Energy barrier to magnetic vortex nucleation

2006 ◽  
Vol 88 (1) ◽  
pp. 012508 ◽  
Author(s):  
J. W. Lau ◽  
J. K. Bording ◽  
M. Beleggia ◽  
Y. Zhu
Keyword(s):  
Energy Barrier ◽  
Magnetic Vortex ◽  
Vortex Nucleation

scholarly journals Magnetic vortex nucleation modes in static magnetic fields

AIP Advances ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 105103
Author(s):  
Marek Vaňatka ◽  
Michal Urbánek ◽  
Roman Jíra ◽  
Lukáš Flajšman ◽  
Meena Dhankhar ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Magnetic Vortex ◽  
Static Magnetic Fields ◽  
Vortex Nucleation

Magnetic vortex nucleation and annihilation in bi-stable ultra-small ferromagnetic particles

Nanoscale ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 2587-2595
Author(s):  
M. J. Martínez-Pérez ◽  
B. Müller ◽  
J. Lin ◽  
L. A. Rodriguez ◽  
E. Snoeck ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Temporal Stability ◽  
Magnetic Vortex ◽  
Magnetic Vortices ◽  
Full Picture ◽  
Ferromagnetic Particles ◽  
Vortex Nucleation

We nucleate and manipulate magnetic vortices in ultrasmall magnetic nanoparticles and provide the full picture of their thermal and temporal stability.

Tuning the Magnetic Vortex State in Magnetite Nanodiscs for Remote Control of Biological Signalling

2019 ◽  
Author(s):  
Danijela Gregurec ◽  
Alexander W. Senko ◽  
Andrey Chuvilin ◽  
Pooja Reddy ◽  
Ashwin Sankararaman ◽  
...  
Keyword(s):  
Remote Control ◽  
Ion Channels ◽  
Ground State ◽  
Magnetic Particles ◽  
Colloidal Stability ◽  
Vortex State ◽  
Magnetic Vortex ◽  
Electron Holography ◽  
Dipole Interactions ◽  
Magnetite Particles

In this work, we demonstrate the application of anisotropic magnetite nanodiscs (MNDs) as transducers of torque to mechanosensory cells under weak, slowly varying magnetic fields (MFs). These MNDs possess a ground state vortex configuration of magnetic spins which affords greater colloidal stability due to eliminated dipole-dipole interactions characteristic of isotropic magnetic particles of similar size. We first predict vortex magnetization using micromagnetic stimulations in sub-micron anisotropic magnetite particles and then use electron holography to experimentally investigate the magnetization of MNDs 98–226 nm in diameter. When MNDs are coupled to MFs, they transition between vortex and in-plane magnetization allowing for the exertion of the torque on the pN scale, which is sufficient to activate mechanosensitive ion channels in cell membranes.<br>

Interaction of a Magnetic Vortex with Magnetic Anisotropy Nonuniformity

2020 ◽  
Vol 131 (4) ◽  
pp. 589-599
Author(s):  
V. A. Orlov ◽  
G. S. Patrin ◽  
I. N. Orlova
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Vortex

Dynamics of vortex nucleation inA3flow

1992 ◽  
Vol 45 (10) ◽  
pp. 5491-5503 ◽  
Author(s):  
N. B. Kopnin ◽  
P. I. Soininen ◽  
M. M. Salomaa
Keyword(s):  
Vortex Nucleation
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