کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8154095 1524772 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microwave absorption of NdFe magnetic powders tuned with impedance matching
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Microwave absorption of NdFe magnetic powders tuned with impedance matching
چکیده انگلیسی
Excellent microwave absorption performance was obtained from NdFe magnetic powders. A suitable oxidation heat treatment temperature can optimize the impedance matching effectively and result in a good absorption performance. By varying the coating thickness, the reflection loss values of oxidized NdFe magnetic powders are less than −10 dB nearly in the whole range of 2-18 GHz. The maximum reflection loss value of the oxidized NdFe magnetic powders at 373 K reaches up to −55.9 dB at 3.6 GHz with a thickness of 3.0 mm. In addition, the microwave absorption peak frequency can also be tuned by the oxidation heat treatment temperature. The obtained results and systematic analysis suggest that NdFe magnetic powders would be attractive candidates for microwave absorbing materials and the oxidation heat treatment could be an effective way to optimize the impedance matching of some ferromagnetic alloy absorption materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 449, 1 March 2018, Pages 385-389
نویسندگان
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