1 Ocak 2016 Dergi makalesi Açık Erişim

Topal, Ugur; Aksan, Mehmet Ali

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    <subfield code="a">Phase stabilization of magnetite (Fe3O4) nanoparticles with B2O3 addition: A significant enhancement on the phase transition temperature</subfield>
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    <subfield code="a">Magnetite nanoparticles (MNPs) are extensively investigated for biomedical applications, particularly as contrast agents for Magnetic Resonance Imaging and as drug delivery agent and heat mediators for cancer therapy. Tuning the magnetic properties of the magnetite nanoparticles with doping of foreign atoms has a crucial importance for determining the application areas of these materials and so attracts much interests. On the other hand the doping with foreign atoms requires high temperature annealing, and it causes a phase transition to the hematite phase above 400 degrees C. In this work the phase transition temperature from the magnetite to the hematite phase has been increased by 200 degrees C, which is the highest enhancement reported in literature. It was achieved by addition of the appropriate amounts of B2O3 Our experiments indicates that the 5.0 wt% of B2O3 addition stabilizes and keeps the existence of single phase magnetite up to 600 degrees C. (C) 2016 Elsevier B.V. All rights reserved.</subfield>
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    <subfield code="u">Inonu Univ, Fen Edebiyat Fak, TR-44280 Fizik Bolumu, Malatya, Turkey</subfield>
    <subfield code="a">Aksan, Mehmet Ali</subfield>
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