کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1622990 | 1516405 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microwave absorption properties of La doped barium titanate in X-band
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Microwave absorption properties of La doped barium titanate in X-band Microwave absorption properties of La doped barium titanate in X-band](/preview/png/1622990.png)
چکیده انگلیسی
La doped barium titanate particles were prepared by the sol-gel method. The structure and microwave absorption properties of the Ba1âxLaxTiO3 particles (x varies from 0% to 1.0% in steps of 0.4%) were characterized by the methods of X-ray diffraction (XRD), Raman spectroscopy and vector network analyzer. All samples are found to be single phase with tetragonal BaTiO3 structure, the existence of long-range lattice disorder, local polar ordering and A-site La3+ defects, respectively. Barium titanate with x > 0 exhibited significant dispersion in complex permittivity. The dispersion in complex permeability was not significant. The variations of reflection loss were studied as a function of frequency and La3+ content. For sample with x equal to 0.6%, a minimum reflection loss of â41.0 dB was obtained. The bandwidth with loss above â10 dB was more than 1.7 GHz. It means that the doping of La ions can greatly improve the microwave absorption properties of the materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 472, Issues 1â2, 20 March 2009, Pages 441-445
Journal: Journal of Alloys and Compounds - Volume 472, Issues 1â2, 20 March 2009, Pages 441-445
نویسندگان
Yankun Liu, Yujie Feng, Xiaowei Wu, Xiaguang Han,