14 مرداد 1399
حامد بحيرايي

حامد بحیرایی

مرتبه علمی: استادیار
نشانی:
تحصیلات: دکترای تخصصی / فیزیک حالت جامد
تلفن: 09376003569
دانشکده: علوم پایه

مشخصات پژوهش

عنوان
The effect of sintering temperature on the electromagnetic properties of nanocrystalline MgCuZn ferrite prepared by sol–gel auto combustion method
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Magnetic materials Sintering Electroceramics Nanocrystalline materials Initial permeability Electromagnetic properties
سال
2014
مجله MATERIALS LETTERS
پژوهشگران حامد بحیرایی

چکیده

In this work, the nanocrystalline MgCuZn ferrite powder was prepared through the nitrate–citrate auto-combustion route. The as-burnt powder after calcination at 600 °C, sintered at different temperatures below silver melting point in the range of 850–950 °C for 4 h. The structural and magnetic properties were investigated as a function of sintering temperatures. The X-ray diffraction patterns exhibited the formation of a single phase cubic spinel structure. The microstructural evaluations showed homogeneous grains and also revealed that the variation of sintering temperature significantly affected the densification and grain growth of the samples. The density, grain size, initial permeability (µi) and saturation magnetization (Ms) of all the samples increased with sintering temperature. The relative quality factor (RQF) also showed highest value for the sample sintered at 950 °C.