Effect of 1D Ordering on Magnetic Properties of Iron Nanoparticles coated by Silica Shell

• Authors: A. Zeleňáková , P. Hrubovčák , V. Zeleňák , J. Kováč
• Languages of publication: EN

Abstracts

EN

Peculiar magnetic properties of 1D arranged composite consisting of Fe nanoparticles coated by insulating SiO2 layer were studied. Silica layer promotes the self-organization of 4 nm iron nanoparticles to the chain-like structures. Magnetization study shows that prepared nanoparticles exhibit very strong inter-particle magnetic interactions, which lead to long-range ordering of nanoparticles magnetic moments. Magnetic properties show superferromagnetic behaviour. The low value of room temperature coercivity, the existence of electrical insulating silica layer and small size of iron nanoparticles favour studied material for potential usage in microelectronic devices designed for high voltage signals modulated by high frequencies.

Keywords

EN

75.40.Cx; 75.75.Fk; 68.37.Og

Discipline

• 68.37.Og: High-resolution transmission electron microscopy (HRTEM)
• 75.75.Fk: Domain structures in nanoparticles
• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2018
• Volume: 133
• Issue: 3
• Pages: 561-563

Dates

published

2018-03

Contributors

author

A. Zeleňáková

• Department of Condensed Matter Physics, P.J. Šafárik University, Park Angelinum 9, Košice, Slovakia

author

P. Hrubovčák

• Department of Condensed Matter Physics, P.J. Šafárik University, Park Angelinum 9, Košice, Slovakia

author

V. Zeleňák

• Department of Inorganic Chemistry, P.J. Šafárik University, Moyzesova 11, Košice, Slovakia

author

J. Kováč

• Institute of Experimental Physics, SAS, Watsonova 41, Košice, Slovakia

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Identifiers

DOI

10.12693/APhysPolA.133.561