Acoustic Properties of Magnetic Fluids Based on Transformer Oil Under Magnetic Field

Jozef Kúdelčík; Peter Bury; Peter Kopčanský; Milan Timko; Vlasta Závišová

doi:10.2478/jee-2013-0058

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Acoustic Properties of Magnetic Fluids Based on Transformer Oil Under Magnetic Field

Journal of Electrical Engineering

Volume 64 (2013): Issue 6 (November 2013)

By: Jozef Kúdelčík, Peter Bury, Peter Kopčanský, Milan Timko and Vlasta Závišová

Open Access

|Nov 2013

Abstract

The structural changes in magnetic fluids based on transformer oil TECHNOL and MOGUL upon the effect of an external magnetic field and temperature were studied by acoustic spectroscopy. When a magnetic field is increased, the interaction between the magnetic field and the magnetic moments of the nanoparticles leads to the aggregation of magnetic nanoparticles and following clusters formation. However, the temperature of magnetic fluids has also very important influence on the structural changes because of the mechanism of thermal motion that acts against the cluster creation. The live time of clusters have relative long time scale for the magnetic fluid based on TECHNOL, while for MOGUL is quite short.

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Articles in this issue

DOI: https://doi.org/10.2478/jee-2013-0058 | Journal eISSN: 1339-309X | Journal ISSN: 1335-3632

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Language: English

Page range: 381 - 385

Published on: Nov 23, 2013

Published by: Slovak University of Technology in Bratislava

In partnership with: Paradigm Publishing Services

Publication frequency: 6 issues per year

Keywords:

magnetic fluid,

transformer oil,

acoustic spectroscopy,

clusters,

magnetic field

Related subjects:

Engineering,

Introductions and overviews,

Engineering, other

© 2013 Jozef Kúdelčík, Peter Bury, Peter Kopčanský, Milan Timko, Vlasta Závišová, published by Slovak University of Technology in Bratislava
This work is licensed under the Creative Commons License.

Volume 64 (2013): Issue 6 (November 2013)