کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1789029 | 1023488 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic behaviour of nanocrystalline Ni-Cu ferrite and the effect of irradiation by 100Â MeV Ni ions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effects of 100Â MeV Ni ion irradiation on magnetic properties of nanoparticles of Ni0.8Cu0.2Fe2O4 with average particle sizes of 40Â Ã
and 60Â Ã
, synthesized by chemical co-precipitation method have been studied. The spinel cubic structures were confirmed by XRD. The average particle size estimated by XRD and by Langevin function fitting are in good agreement for both the pristine and irradiated samples. The blocking temperature increases with particle size and does not change after irradiation. On irradiation by 100Â MeV Ni ions, significant changes in the hysteresis loop features are observed, which may be attributed to formation of cluster of defects in the nanocrystalline samples due to swift heavy ion (SHI) irradiation. It is also found that SHI irradiation produces more dominant changes in the hysteresis loop of smaller particle size of 40Â Ã
as compared to that of 60Â Ã
.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 8, Issue 5, August 2008, Pages 620-625
Journal: Current Applied Physics - Volume 8, Issue 5, August 2008, Pages 620-625
نویسندگان
S.N. Dolia, Ravi Kumar, S.K. Sharma, M.P. Sharma, Subhash Chander, M. Singh,