کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1595356 1002773 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of sintering temperature and atmosphere on magnetism in Mn-doped TiO2 bulk samples
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Effects of sintering temperature and atmosphere on magnetism in Mn-doped TiO2 bulk samples
چکیده انگلیسی

Magnetic properties have been investigated on Mn doped TiO2(Ti0.98Mn0.02O2) bulk samples prepared by solid state reaction, which were sintered at different temperature ranging from 450 ∘C to 900 ∘C in air and argon atmosphere, respectively. The results show that the magnetic properties were strongly dependent on the sintering temperature and atmosphere. For samples sintered in air, the magnetization initially increase with the increase of sintering temperature up to 600 ∘C and thereafter it decrease. While the magnetization of samples sintered in argon atmosphere decreases monotonically with the increase of sintering temperature. Furthermore, for samples sintered at 600 ∘C in air, the magnetic susceptibility exhibits a dominant Curie–Weiss behaviour and no magnetic transition is observed over the temperature range from 10 to 300 K. In contrast, for samples sintered in argon atmosphere, besides the magnetic transition near 45 K perhaps caused by Mn3O4, another magnetic transition appears near room temperature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 142, Issue 9, June 2007, Pages 545–549
نویسندگان
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