Structural and magnetic properties of CoO-Pt core-shell nanoparticles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00431708" target="_blank" >RIV/68378271:_____/14:00431708 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.89.104417" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.89.104417</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.89.104417" target="_blank" >10.1103/PhysRevB.89.104417</a>
Alternative languages
Result language
angličtina
Original language name
Structural and magnetic properties of CoO-Pt core-shell nanoparticles
Original language description
Using microemulsion methods, CoO-Pt core-shell nanoparticles were synthesized and characterized by transmission electron microscopy, x-ray diffraction and x-ray absorption spectroscopy, which confirmed the existence of CoO cores and pure Pt surface layers. Using a magnetometer, the ac and dc magnetic properties were investigated over a range of temperature (2 K T 300 K), magnetic field (50 kOe), and frequency (1 kHz). The data suggest the presence of two different magnetic regimes whose onsets are identified at 6 K and 37 K, respectively. The magnetic behavior around 37 K indicates a superparamagnetic blocking of interacting nanoparticle moments. The behavior at 6 K characterizes a collective freezing of the nanoparticle moments in a superspin glass state. This co-existence of blocking and freezing behaviors is consistent with the presence of an antiferromagnetically ordered core and a magnetically disordered interlayer between the CoO core and the Pt shell.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BG - Nuclear, atomic and molecular physics, accelerators
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review. B
ISSN
1098-0121
e-ISSN
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Volume of the periodical
89
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
"104417-1"-"104417-10"
UT code for WoS article
000333125100003
EID of the result in the Scopus database
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