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Thermal, electrical, and magnetic properties of Fe2O3-PbO-SiO2 glass prepared by traditional melt-quenching and twin roller fast-cooling methods
Gdansk Univ Technol, Poland.
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. Gdansk Univ Technol, Poland.
Gdansk Univ Technol, Poland;Polish Acad Sci, Poland.
Gdansk Univ Technol, Poland.
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2019 (English)In: Journal of Physics and Chemistry of Solids, ISSN 0022-3697, E-ISSN 1879-2553, Vol. 135, article id 109010Article in journal (Refereed) Published
Abstract [en]

In this study, Fe-Pb-Si oxide glasses containing between 12.5 and 17.5 mol% Fe2O3 were prepared using two different methods comprising traditional melt-quenching and twin roller fast-cooling techniques. The topography and structure of the materials obtained were characterized by X-ray powder diffraction and scanning electron microscopy. All of the materials were found to be amorphous. The topography of most of the glasses comprised random or evenly distributed nanostructures, where the size and amount were dependent on the iron content and preparation technique. The thermal properties of the glasses were analyzed by differential scanning calorimetry, which showed that the glass transition temperatures varied between 529 degrees C and 552 degrees C. The electric conductivity and magnetic susceptibility of the glasses were analyzed by impedance spectroscopy and with an alternating current magnetic properties measurement system, respectively. The measurements of the electrical properties indicated a relatively low activation energy for direct current conductivity (similar to 0.5-0.68 eV), which is typical of the polaron hopping mechanism. All of the materials exhibited magnetic hysteresis loops and they were ferromagnetic.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 135, article id 109010
Keywords [en]
Electrical properties, Iron-oxide glass, Magnetic properties, Thermal properties
National Category
Materials Engineering
Research subject
Technology (byts ev till Engineering), Glass Technology
Identifiers
URN: urn:nbn:se:lnu:diva-89863DOI: 10.1016/j.jpcs.2019.05.007ISI: 000488419800014OAI: oai:DiVA.org:lnu-89863DiVA, id: diva2:1366945
Available from: 2019-10-31 Created: 2019-10-31 Last updated: 2019-10-31Bibliographically approved

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Wójcik, Natalia A.

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