Synthesis of iron oxide nanoparticles and enhancement of their saturation magnetization
- سال انتشار: 1388
- محل انتشار: سومین کنفرانس نانوساختارها
- کد COI اختصاصی: CNS03_364
- زبان مقاله: انگلیسی
- تعداد مشاهده: 1664
نویسندگان
Physics department, University of Birjand, Birjand ۹۷۱۶۵/۶۱۵, Iran
چکیده
Superparamagnetic Iron Oxide nanoparticles were prepared by coprecipitation method using NaOH as precipitation agent. A mechanical homogenizer was used to stir the solutions in order to produce small particles with narrow size distribution. Magnetic properties of nanoparticles were measured by a VSM. The effect of reaction temperature and concentration of reactants on size and magnetic properties of nanoparticles were investigated. The size of particles was calculated by Sherrer formula and magnetic data and compared with the size of nanoparticles which obtained by TEM. The sizes of produced nanoparticles were between 8 to 11 nm and their saturation magnetization was between 56 and 84 emu/gr. A good increase of saturation magnetization was observed by changing the reaction temperature and precursor concentration, while the size of particles was around 10 nm and did not increase significantly which might be due to the improvement of crystalinity of the nanoparticles.کلیدواژه ها
Iron oxide; nanoparticles; magnetic properties; coprecipitation; saturation magnetizationمقالات مرتبط جدید
اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.