scholarly journals SP-SEM Observation of Magnetic Vortex States in Permalloy Disks

2003 ◽  
Vol 3 (1) ◽  
pp. 26-29 ◽  
Author(s):  
Y. Yamada ◽  
M. Nakamura ◽  
K. Sueoka ◽  
K. Mukasa
Keyword(s):  
Magnetic Vortex ◽  
Vortex States ◽  
Sem Observation

scholarly journals Magnetic Vortex States in Small Octahedral Particles of Intermediate Titanomagnetite

2018 ◽  
Vol 19 (9) ◽  
pp. 3071-3083 ◽  
Author(s):  
E. Khakhalova ◽  
B. M. Moskowitz ◽  
W. Williams ◽  
A. R. Biedermann ◽  
P. Solheid
Keyword(s):  
Magnetic Vortex ◽  
Vortex States

Magnetic vortex states in chromium(IV) oxide (CrO2)

2020 ◽  
Vol 494 ◽  
pp. 165845
Author(s):  
K. Balamurugan ◽  
P.S. Siva Sankaran ◽  
S. Manivannan
Keyword(s):  
Magnetic Vortex ◽  
Vortex States

scholarly journals Magnetic Vortex States in Toroidal Iron Oxide Nanoparticles: Combining Micromagnetics with Tomography

Nano Letters ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 7405-7412
Author(s):  
George R. Lewis ◽  
James C. Loudon ◽  
Robert Tovey ◽  
Yen-Hua Chen ◽  
Andrew P. Roberts ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Magnetic Vortex ◽  
Oxide Nanoparticles ◽  
Vortex States

Excited eigenmodes in magnetic vortex states of soft magnetic half-spheres and spherical caps

2014 ◽  
Vol 116 (22) ◽  
pp. 223902 ◽  
Author(s):  
Myoung-Woo Yoo ◽  
Jae-Hyeok Lee ◽  
Sang-Koog Kim
Keyword(s):  
Magnetic Vortex ◽  
Soft Magnetic ◽  
Vortex States ◽  
Spherical Caps

Fast current-driven switching of magnetic vortex states in permalloy microrings

2013 ◽  
Vol 102 (13) ◽  
pp. 132407 ◽  
Author(s):  
S. R. Bowden ◽  
U. J. Gibson
Keyword(s):  
Magnetic Vortex ◽  
Vortex States

scholarly journals The dynamics of magnetic vortex states in a single permalloy nanoparticle

2008 ◽  
Vol 320 (1-2) ◽  
pp. 47-52 ◽  
Author(s):  
Dmitry Ruzmetov ◽  
Venkat Chandrasekhar
Keyword(s):  
Magnetic Vortex ◽  
Vortex States

scholarly journals Symmetry breaking in the formation of magnetic vortex states in a permalloy nanodisk

2012 ◽  
Vol 3 (1) ◽  
Author(s):  
Mi-Young Im ◽  
Peter Fischer ◽  
Keisuke Yamada ◽  
Tomonori Sato ◽  
Shinya Kasai ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Magnetic Vortex ◽  
Vortex States

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>

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