Thermal fluctuations of magnetic nanoparticles: Fifty years after Brown

WT Coffey, YP Kalmykov - Journal of Applied Physics, 2012 - pubs.aip.org
Fine single domain ferromagnetic particles exhibit unstable behavior of the magnetization
due to thermal agitation resulting in, so-called, superparamagnetism 1 because each …

[图书][B] Mössbauer spectroscopy of environmental materials and their industrial utilization

E Murad, J Cashion - 2011 - books.google.com
Mössbauer Spectroscopy of Environmental Materials and their Industrial Utilization provides
a description of the properties of materials formed on the earth's surface, their synthetic …

Vacancy ordered γ-Fe2O3 nanoparticles functionalized with nanohydroxyapatite: XRD, FTIR, TEM, XPS and Mössbauer studies

JAR Guivar, EA Sanches, F Bruns, E Sadrollahi… - Applied surface …, 2016 - Elsevier
Vacancy ordered maghemite (γ-Fe 2 O 3) nanoparticles functionalized with
nanohydroxyapatite (HAp–Ca 10 (PO 4) 6 (OH) 2) have been successfully synthesized …

Nanoscale size effect on surface spin canting in iron oxide nanoparticles synthesized by the microemulsion method

M Darbandi, F Stromberg, J Landers… - Journal of Physics D …, 2012 - iopscience.iop.org
Uniformly sized and crystalline iron oxide nanoparticles (IONPs) with spinel structure and
mean diameters of about 3, 6 and 9 nm were synthesized in high yield using the …

Magnetism of earth, planetary, and environmental nanomaterials

DG Rancourt - Reviews in mineralogy and geochemistry, 2001 - pubs.geoscienceworld.org
Superparamagnetism, the archetypal small particle phenomenon, was first described by
Louis Néel (1949a, b) in the context of rock magnetism. Key features of the underlying …

The effect of surface spin disorder on the magnetism of γ-Fe2O3 nanoparticle dispersions

TN Shendruk, RD Desautels, BW Southern… - …, 2007 - iopscience.iop.org
The nanomagnetism of monodisperse 7 nm γ-Fe 2 O 3 nanoparticles exhibits unique
features due to a significant amount of surface spin disorder. To correctly characterize the …

[HTML][HTML] Uniform excitations in magnetic nanoparticles

S Mørup, C Frandsen… - Beilstein journal of …, 2010 - beilstein-journals.org
We present a short review of the magnetic excitations in nanoparticles below the
superparamagnetic blocking temperature. In this temperature regime, the magnetic …

On the interpretation of Mössbauer spectra of magnetic nanoparticles

J Fock, MF Hansen, C Frandsen, S Mørup - Journal of Magnetism and …, 2018 - Elsevier
Mössbauer spectra of magnetic nanoparticles are usually influenced by fluctuations of the
direction of the magnetic hyperfine field. In samples of non-interacting particles, the …

Preparation of graphene oxide-maghemite-chitosan composites for the adsorption of europium ions from aqueous solutions

G Lujanienė, R Novikau, EF Joel, K Karalevičiūtė… - Molecules, 2022 - mdpi.com
The adsorption of Eu (III) on composites synthesised from graphene oxide (GO), maghemite
(MGH), and chitosan (CS) has been studied using different approaches. The …

Simultaneous study of brownian and neel relaxation phenomena in ferrofluids by mossbauer spectroscopy

J Landers, S Salamon, H Remmer, F Ludwig… - Nano …, 2016 - ACS Publications
We demonstrate the ability of Mössbauer spectroscopy to simultaneously investigate
Brownian motion and Néel relaxation in ferrofluidic samples. For this purpose, Mössbauer …