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محمد الماسی کاشی

محمد الماسی کاشی

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دانشکده: دانشکده فیزیک

گروه: فیزیک ماده ی چگال

مقطع تحصیلی: دکترای تخصصی

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محمد الماسی کاشی

استاد محمد الماسی کاشی

دانشکده: دانشکده فیزیک - گروه: فیزیک ماده ی چگال مقطع تحصیلی: دکترای تخصصی |

Detection of Single-Domain Co2FeAl Nanoparticles Using First-Order Reversal Curve Method

نویسندگانسیما علیخان زاده-محمد الماسی کاشی-زهرا پزشکی نژاد-عبد العلی رمضانی-مسعود صلواتی
نشریهMETALL MATER TRANS A
نوع مقالهFull Paper
تاریخ انتشار2016-10-01
رتبه نشریهISI
نوع نشریهچاپی
کشور محل چاپایران
نمایه نشریهISI

چکیده مقاله

Half-Heusler nanostructures of Co2FeAl alloys, synthesized via coprecipitation route, were found to contain both hard- and soft-phases magnetic grains, mapped using first-order reversal curves (FORCs) diagrams. The obtained results confirmed that these powders are highly interacting as a single-domain magnetizing system. A significant dependence of the morphology and particle size on the annealing rate was represented by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-resolution TEM images. The presence of the strong magnetizing interaction between the nanoparticles led to the formation of chain-like structure stabilized by PVP polymer. By increasing the annealing rate from 278.15 K/min to 288.15 K/min (5 °C/min to 15 °C/min), the grain shape changed from long nanochain to nonuniform agglomerated grains. Additionally, the magnetic characteristics of the prepared alloys were found to be affected by tuning the annealing rate.