Relaxation phenomena in ensembles of CoFe2O4 nanoparticles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00377160" target="_blank" >RIV/68378271:_____/12:00377160 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jmmm.2011.11.005" target="_blank" >http://dx.doi.org/10.1016/j.jmmm.2011.11.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmmm.2011.11.005" target="_blank" >10.1016/j.jmmm.2011.11.005</a>

Result language

angličtina

Original language name

Relaxation phenomena in ensembles of CoFe2O4 nanoparticles

Original language description

Collective magnetic behavior of CoFe2O4 nanoparticles with diameters of 76, 16, 15 and 8 nm, respectively, prepared by di erent chemical methods has been investigated. Particle composition, size and structure have been characterized by inductive coupledplasma (ICP), transmission elektron microscopy (TEM) and powder X-ray di raction (PXRD). Basic magnetic properties have been determined from the temperature dependence of magnetization and magnetization isotherms measurements. The three samples exhibit characteristic of a superparamagnetic system with the presence of strong interparticle interactions. Magnetic relaxation phenomena have been examined via frequency-dependent ac susceptibility measurements and aging and memory e ect experiments. For the particles coated with oleic acid, it has been demonstrated that the sample reveals all attributes of a super-spin glass (SSG) system with strong interparticle interactions.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Magnetism and Magnetic Materials

ISSN

0304-8853

e-ISSN

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Volume of the periodical

324

Issue of the periodical within the volume

6

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

7

Pages from-to

1182-1188

UT code for WoS article

000298864100048

EID of the result in the Scopus database

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