کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10640193 | 995877 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solid solutions La1âxAgyMnO3+δ: evidence for silver doping, structure and properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
Our experiments on the preparation of the composites of CMR manganites and metal silver have shown that in the case of La1âxMnO3+δ the vacancies in the A-sublattice of the perovskite structure can be filled by Ag+ ions under the soft conditions of the synthesis. Neutron diffraction refinement of La0.8Ag0.2MnO3.00 clearly proves the silver doping in the A-sublattice. Depending on P(O2)-T synthesis conditions the solid solutions with the broad stoichiometry range La1âxAgyMnO3+δ (0.3 â¥Â x â¥Â y) were prepared. We report here the evolution of the oxygen stoichiometry, the crystal structure as well as electro-physical properties in the series of the solid solutions. Curie temperature comes over a maximum exceeding the room temperature with the increase of silver content. La1âxAgyMnO3+δ solid solutions can be useful for the construction of the room temperature magnetic field sensors based on the magnetoresistance effect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 116, Issue 1, 15 January 2005, Pages 64-70
Journal: Materials Science and Engineering: B - Volume 116, Issue 1, 15 January 2005, Pages 64-70
نویسندگان
O.Yu. Gorbenko, O.V. Melnikov, A.R. Kaul, A.M. Balagurov, S.N. Bushmeleva, L.I. Koroleva, R.V. Demin,