1 Ocak 2008 Dergi makalesi Açık Erişim

Topal, Ugur; Ozkan, Husnu; Bakan, Halil I.; Cankur, Oktay; Topal, Kevser

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    <subfield code="a">Evolution of magnetic and structural properties of TiO2 with Co-doping</subfield>
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    <subfield code="a">This paper presents the phase formations and magnetic properties of Co-doped TiO2 synthesized by the colloidal and ammonium nitrate melt techniques (ANMT). The phase formations and ferromagnetic properties were studied with XRD and SQUID magnetometry. Crystallization of the TiO2 rutile lattice was completed at 1000 degrees C and that was preserved during annealing up to 1300 degrees C. For the samples annealed at 1200 degrees C, elemental analysis has shown that the colloidal technique leads to a single-phase rutile with cobalt concentration of almost nothing even in the initially 0.5 mol Co-added samples. Further increase of annealing temperature results in the appearance of other Ti-phases in addition to the rutile. On the other hand, it is quite interesting that these samples show ferromagnetic behavior. The samples synthesized by the ANMT method contain larger amounts of Co compared to the colloidal technique. (c) 2007 Elsevier B.V. All rights reserved.</subfield>
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    <subfield code="u">Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey</subfield>
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