کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1798950 | 1524827 | 2015 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Influence of microstructure on properties of Ni–Zn ferrite radio-absorbing materials Influence of microstructure on properties of Ni–Zn ferrite radio-absorbing materials](/preview/png/1798950.png)
• Addition of Bi2O3 up to 1 mass% leads to increasing grain sizes of Ni-Zn ferrites.
• Coarse-grained structure is achieved adding ferrite particles of a large fraction.
• Coarse-grained structure leads to increasing absorbing capacity at low frequencies.
• It can be explained by the resonance of domain boundaries.
In this work there have been carried out studies in the radiophysical characteristics of the samples of Ni–Zn ferrite radio-absorbing materials, obtained by the ceramic method under different technological conditions. There has been established the influence of microstructure on the electromagnetic losses of Ni–Zn ferrite radio-absorbing materials. The results indicate that the coarse-grained structure leads to an increase of radio-absorbing capacity at frequencies below 30 MHz. It can be explained by the resonance of domain boundaries.
Journal: Journal of Magnetism and Magnetic Materials - Volume 394, 15 November 2015, Pages 1–6