Results 21 to 30 of about 271,563 (296)

Core–shell behavior and exchange bias of Fe-doped CuO nanoparticles

open access: yesAIP Advances, 2020
Cu1−xFexO nanoparticles were prepared using a freeze-drying process followed by heat treatment. The particles were then characterized using Mössbauer spectroscopy and magnetization techniques.
Aline Alves Oliveira   +6 more
doaj   +1 more source

Characterization of nanodimensional Ni-Zn ferrite prepared by mechanochemical and thermal methods. [PDF]

open access: yes, 2010
Nickel zinc ferrite nanoparticles, Ni1−xZnxFe2O4 (x = 0, 0.2, 0.5, 0.8, 1.0), with dimensions below 10 nm have been prepared by combining chemical precipitation with high-energy ball milling.
B Kunev   +6 more
core   +1 more source

Novel magnetic multicore nanoparticles designed for MPI and other biomedical applications: From synthesis to first in vivo studies. [PDF]

open access: yesPLoS ONE, 2018
Synthesis of novel magnetic multicore particles (MCP) in the nano range, involves alkaline precipitation of iron(II) chloride in the presence of atmospheric oxygen.
Harald Kratz   +8 more
doaj   +1 more source

Magnetization Dynamics of Superparamagnetic Nanoparticles for Magnetic Particle Spectroscopy and Imaging

open access: yesPhysical Review Applied, 2022
An exact theory is developed with the aim of assessing the properties of the harmonics spectrum of the dynamic magnetization originating from superparamagnetic nanoparticles submitted to a high-frequency driving field. The magnetization is assumed to be always close to equilibrium at the frequencies of interest, so that it can still be described by the
Barrera, G, Allia, P, Tiberto, P
openaire   +2 more sources

Effect of key parameters on synthesis of superparamagnetic nanoparticles (SPIONs)

open access: yesCurrent Directions in Biomedical Engineering, 2016
There are various methods to synthesize superparamagnetic nanoparticles (SPIONs) useful for MPI (magnetic particle imaging) and in therapy (Hypothermia) such as co-precipitation, hydrothermal reactions etc.
Malhotra Ankit   +4 more
doaj   +1 more source

Magnetic response of energy levels of superconducting nanoparticles with spin-orbit scattering

open access: yes, 2015
Discrete energy levels of ultrasmall metallic grains are extracted in single-electron-tunneling-spectroscopy experiments. We study the response of these energy levels to an external magnetic field in the presence of both spin-orbit scattering and pairing
Alhassid, Y., Nesterov, Konstantin N.
core   +3 more sources

Nanoscale structural evaluation of 0-3 magnetic nanocomposites fabricated by electro-infiltration

open access: yesAIP Advances, 2019
Magnetic nanocomposites with 0-3 connectivity, whereby a 0D magnetic nanoparticle phase is embedded into a 3D magnetic metal matrix phase, have gained increased interest for use in applications ranging from integrated power inductor cores to exchange ...
Connor S. Smith   +5 more
doaj   +1 more source

Topological vortex formation in a Bose-Einstein condensate

open access: yes, 2002
Vortices were imprinted in a Bose-Einstein condensate using topological phases. Sodium condensates held in a Ioffe-Pritchard magnetic trap were transformed from a non-rotating state to one with quantized circulation by adiabatically inverting the ...
A. E. Leanhardt   +12 more
core   +1 more source

Persistent dynamic magnetic state in artificial honeycomb spin ice

open access: yesNature Communications, 2023
Topological magnetic charges, arising due to the non-vanishing magnetic flux on spin ice vertices, serve as the origin of magnetic monopoles that traverse the underlying lattice effortlessly.
J. Guo   +7 more
doaj   +1 more source

Four-electron shell structures and an interacting two-electron system in carbon nanotube quantum dots

open access: yes, 2005
Low-temperature transport measurements have been carried out on single-wall carbon nanotube quantum dots in a weakly coupled regime in magnetic fields up to 8 Tesla.
J. J. Sakurai   +7 more
core   +1 more source

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