کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8155387 | 1524820 | 2016 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
About room temperature ferromagnetic behavior in BaTiO3 perovskite
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
A ferromagnetic behavior at room temperature is detected in micro-, submicro- and nano-powders of BaTiO3 perovskite by means of magnetization measurements, where the magnetic response is originated of different sources, depending on nature of the sample. For BaTiO3 micropowders is associated with the presence of a magnetic impurity, while for submicro- and nano-powders of BaTiO3 perovskite, the ferromagnetism is due to magnetic moments arising from the oxygen vacancies on the particles surface. We carry out an additional experimental confirmation of our asseverations by means of the electron paramagnetic resonance (EPR) and the low-field microwave absorption (LFMA), at X-band (8.8-9.8Â GHz) and 300Â K, indicating the presence of a magnetic impurity in BaTiO3 micropowders and the existence of oxygen vacancies in BaTiO3 nanopowders.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 401, 1 March 2016, Pages 196-199
Journal: Journal of Magnetism and Magnetic Materials - Volume 401, 1 March 2016, Pages 196-199
نویسندگان
G. Alvarez, A. Conde-Gallardo, H. Montiel, R. Zamorano,