نتایج جستجو برای: bafe12o19
تعداد نتایج: 137 فیلتر نتایج به سال:
ELECTRON SPIN RESONANCE RESPONSE OF BaFe12O19 NANOPARTICLE EMBEDDED POLYDIVINYLBENZENE MAGNETIC FILM
فریت باریم با فرمول شیمیایی bafe12o19 از سری مواد مغناطیسی سخت مغناطیس می باشد که معمولا در صنعت بعنوان آهن رباهای دائمی بکار می رود. بدلیل ارزان بودن مواد اولیه، سادگی نسببی فرآیند تولید، مقاومت ویژه الکتریکی بالا (در حدود 1012 -cm) و همچنین انرژژی ناهمسانگردی زیادی آن باعث شده تا تحقیقات گسترده ای بر روی آن در چند دهه اخیر صورت گیرد. نظر به انیکه ریزساختار، نقش بسیار مهمی بر ویژگیهای مغناطیسی...
Barium M-hexaferite is a material which has the potential to be developed as magnetic needed in various fields of application. Various methods have been used produce this material, but general these require heating at relatively high temperatures. This research was conducted characterize properties and microwave absorption barium M-hexaferrite synthesized using coprecipitation method by sinteri...
The multiwalled carbon nanotubes/BaFe12O19-chitosan (MCNTs/BF-CS) Schiff base Ag (I) complex composites were synthesized successfully by a chemical bonding method. The morphology and structures of the composites were characterized with electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction techniques. Their conductive properties were measured using a four-probe condu...
Ferrites have always been a subject of great interest from point of view of magnetic application, since the fist compass to present date. In contrast, the scientific interest for iron based magnetic oxides decreased after Ørsted discovery as they where replaces by coil as magnetizing sources. Néel discovery of ferrimagnetism boosted again interest and leads to strong developments during two dec...
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