کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8155862 | 1524834 | 2015 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of Fe-deficiency on magnetic properties and Brillouin function characteristics for NiCuZn ferrites
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of Fe-deficiency on magnetic properties and Brillouin function characteristics for NiCuZn ferrites Effects of Fe-deficiency on magnetic properties and Brillouin function characteristics for NiCuZn ferrites](/preview/png/8155862.png)
چکیده انگلیسی
The polycrystalline Ni0.56Cu0.10Zn0.34Fe2âxO4â3/2x (x=0.00~0.14) ferrites have been prepared by conventional oxide ceramics process. The effects of Fe-deficiency content on magnetic properties and Brillouin function characteristics for NiCuZn ferrites have been investigated in details. With the increase of Fe-deficiency content, the opposite variation trend are observed for the saturation magntic induction Bs and the coercivity Hc. More importantly, based on the Néel molecular field theory, for the spinel ferrites which do not only contain Fe3+ but also some other multiple magnetic ions (Ni2+ and Cu2+), the molecular field coefficients Ïaa, Ïbb and Ïab=Ïba are calculated by non-linear fitting method, and the Curie temperature Tc formula has been modified. With the increase of Fe-deficiency content, the values of Ïaa and Ïbb increase gradually, however, the value of Ïab=Ïba has a contrary trend which results in the decrease of the Curie temperature. In addition, the fitting Curie temperatures values are coincided well with the Curie temperatures calculated by the modified formula.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 387, 1 August 2015, Pages 1-5
Journal: Journal of Magnetism and Magnetic Materials - Volume 387, 1 August 2015, Pages 1-5
نویسندگان
Linglong Chen, Zhong Yu, Yan Yang, Rongdi Guo, Xiaona Jiang, Ke Sun, Chuanjian Wu, Zhongwen Lan,