کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7991445 1516140 2018 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Control of electromagnetic properties in substituted M-type hexagonal ferrites
ترجمه فارسی عنوان
کنترل خواص الکترومغناطیسی در فریت های شش ضلعی ماتیکی جایگزین
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Present paper describes systematic studies of the functional BaFe12-xDIxO19 (DI = Al3+, In3+ 0.1 ≤ x ≤ 1.2) solid solutions. Correlation between the fine atomic structure and intrasublattice Fe3+ - O2− - Fe3+ superexchange interactions were explained using precision neutron powder diffraction and Mossbauer spectroscopy. Critical influence of the diamagnetic Al3+ and In3+ ions on electromagnetic properties in substituted Ba-hexaferrites (M-type) was discussed. Transmission spectra demonstrated a deep minimum in the frequency range 20-65 GHz due to natural ferromagnetic resonance (NFMR). Increase of the Al3+ ions concentration shifted the resonance frequency from 51 GHz to 61 GHz. Increase of the In3+ ions shifted the resonance frequency from 50.5 GHz to 27 GHz. Data of the numerical calculations and experimental results correlates well. It has been demonstrated that external magnetic fields critically influence on electromagnetic properties due to increase of magnetic anisotropy. This opens broad perspectives for practical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 754, 25 July 2018, Pages 247-256
نویسندگان
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