کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8145063 | 1524067 | 2018 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Fe/Pb molar ratio on the structure, magnetic and dielectric properties of PbFe12O19 nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک اتمی و مولکولی و اپتیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of Fe/Pb molar ratio on the structure, magnetic and dielectric properties of PbFe12O19 nanoparticles Effect of Fe/Pb molar ratio on the structure, magnetic and dielectric properties of PbFe12O19 nanoparticles](/preview/png/8145063.png)
چکیده انگلیسی
In this paper, lead hexaferrite (PbFe12O19) nanoparticles were synthesized by sol-gel method. In order to prepare PbFe12O19 nanoparticles, the metal nitrates with Fe/Pbâ¯=â¯8, 10, 11, 12, 14 ratios and citric acid were used. The structure, morphology, magnetic, and dielectric properties of PbFe12O19 nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), vibrating sample magnetometer (VSM) and LCR meter. XRD results revealed that the samples with Fe/Pbâ¯â¤â¯10 and Fe/Pbâ¯>â¯10 have single-phase hexaferrite and hematite (α- Fe2O3) structures, respectively. As a result, the sample with Fe/Pbâ¯=â¯10 is single-phase and shows the highest values of the saturation magnetization and remanence magnetization. We found that the values of dielectric constant (εâ²) and dielectric loss (εâ³) increase with an increase in the Fe/Pb molar ratio from 8 to 12 and then decreases with an increase of Fe/Pb molar ratio to 14. The variation of ac conductivity (Ïac) with frequency ranging from 1â¯kHz to 200â¯kHz showed that electrical conductivity in these ferrites is mainly due to the electron hopping mechanism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Physics - Volume 56, Issue 2, April 2018, Pages 760-769
Journal: Chinese Journal of Physics - Volume 56, Issue 2, April 2018, Pages 760-769
نویسندگان
Z.A. Rostami, S.E. Mousavi Ghahfarokhi, I. Kazeminezhad,