کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1458432 | 1398193 | 2016 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of aligned La3+-substituted Sr-ferrites via molten salt assisted sintering and their magnetic properties Synthesis of aligned La3+-substituted Sr-ferrites via molten salt assisted sintering and their magnetic properties](/preview/png/1458432.png)
M-type hexagonal Sr1−xLaxFe12O19 (x=0, 0.05, 0.1, 0.15 and 0.2) ferrites were synthesized in a molten salt matrix to avoid the agglomeration of particles and control grain growth. By eliminating the impurity phase, the influence of rare earth La3+ ion substitutions on the lattice structure, morphology and magnetic properties has been investigated. The results show that La3+ substitutions have a great influence not only on the grain growth but also on the magnetic orientation. The easy magnetization direction <001> was remarkably enhanced in all substituted powders aligned along a 5 kOe magnetic field. The optimal magnetic properties were obtained via magnetic orientation when the substitution is x=0.15, showing a coercivity of 6.25 kOe, a saturation magnetization of 69.5 emu/g and a remanence ratio of 0.71. This will possibly enable a wide-range application to generate rare earth La3+ ion substituted Sr-ferrites for bonded magnets via molten salt assisted sintering.
Journal: Ceramics International - Volume 42, Issue 14, 1 November 2016, Pages 15511–15516