Detail publikačního výsledku

Magnetic properties and morphology of ultra-small iron oxide nanoparticles

PIZÚROVÁ, N.; BURŠÍK, J.; SOJKOVÁ, T.; ROUPCOVÁ, P.; SCHNEEWEISS, O.

Originální název

Magnetic properties and morphology of ultra-small iron oxide nanoparticles

Anglický název

Magnetic properties and morphology of ultra-small iron oxide nanoparticles

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Maghemite nanoparticles prepared with the modified synthesis method published by Sun et al. 2004 and followed by filtering to extract a sample of the smallest nanoparticle size were investigated. The 2-5 nm nanoparticles of monocrystalline and multi-twinned morphology without surface shells were observed. Superparamagnetic behavior was detected above the temperature of 40 K. An exchange bias loop shift of ~ 2 mT at 3 K after cooling with an external field of 3 T suggested a low influence of the surface spin disorder effect. Mössbauer spectroscopy confirmed the two phases with different blocking temperatures, the maghemite phase as well as a second one likely originating from the disordered surface component.

Anglický abstrakt

Maghemite nanoparticles prepared with the modified synthesis method published by Sun et al. 2004 and followed by filtering to extract a sample of the smallest nanoparticle size were investigated. The 2-5 nm nanoparticles of monocrystalline and multi-twinned morphology without surface shells were observed. Superparamagnetic behavior was detected above the temperature of 40 K. An exchange bias loop shift of ~ 2 mT at 3 K after cooling with an external field of 3 T suggested a low influence of the surface spin disorder effect. Mössbauer spectroscopy confirmed the two phases with different blocking temperatures, the maghemite phase as well as a second one likely originating from the disordered surface component.

Klíčová slova

Iron oxides; Nanomagnetics; Nanoparticles; Synthesis (chemical)

Klíčová slova v angličtině

Iron oxides; Nanomagnetics; Nanoparticles; Synthesis (chemical)

Autoři

PIZÚROVÁ, N.; BURŠÍK, J.; SOJKOVÁ, T.; ROUPCOVÁ, P.; SCHNEEWEISS, O.

Rok RIV

2023

Vydáno

04.10.2021

Kniha

Journal of Physics: Conference Series

ISSN

1742-6596

Periodikum

Journal of Physics: Conference Series

Svazek

2315

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

7

Strany počet

7

BibTex

@inproceedings{BUT182600,
  author="Naděžda {Pizúrová} and Jan {Buršík} and Tereza {Sojková} and Pavla {Roupcová} and Oldřich {Schneeweiss}",
  title="Magnetic properties and morphology of ultra-small iron oxide nanoparticles",
  booktitle="Journal of Physics: Conference Series",
  year="2021",
  journal="Journal of Physics: Conference Series",
  volume="2315",
  number="1",
  pages="1--7",
  doi="10.1088/1742-6596/2315/1/012023",
  issn="1742-6596"
}