10 فروردین 1403
حسين رعنايي

حسین رعنایی

مرتبه علمی: دانشیار
نشانی: دانشکده علوم و فناوری نانو و زیستی - گروه فیزیک
تحصیلات: دکترای تخصصی / فیزیک
تلفن: 07731223310
دانشکده: دانشکده علوم و فناوری نانو و زیستی

مشخصات پژوهش

عنوان Morphology and magnetic behavior of cobalt rich amorphous/ nanocrystalline(Co–Ni)70Ti10B20 alloyed powders
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
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مجله JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
شناسه DOI
پژوهشگران حسین رعنایی (نفر اول) ، وحید محمد حسینی (نفر دوم)

چکیده

The effect of milling time on microstructural and magnetic behavior of mechanically alloyed Co49Ni21Ti10B20 is investigated by using X- ray diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, differential scanning calorimetry and vibrating sample magnetometer. It is shown, with increasing milling time, the crystallite size decreases and finally reaches to a low value after 190 h of milling time. The increase in microstrain is also observed during the milling process. The results indicate the coexistence between amorphous and nanocrystalline phases after 190 h of milling time. Moreover, the lowest magnetic coercivity of about 39 Oe at the final milling stage is observed. The results of annealed sample reveal structural ordering of constituent elements.