التفاصيل البيبلوغرافية
| العنوان: |
Effect of Sn doping on the room temperature magnetodielectric properties of yttrium iron garnet. |
| المؤلفون: |
Zhizhi Zhang, Fu Chen, Junnan Li, Zekun Feng, Yan Nie |
| المصدر: |
Journal of Applied Physics; 2015, Vol. 118 Issue 15, p154102-1-154102-5, 5p, 6 Graphs |
| مصطلحات موضوعية: |
YTTRIUM iron garnet, TIN research, DIELECTRIC properties, LATTICE theory, CERAMICS |
| مستخلص: |
The structures, magnetic properties, permittivity spectra, and magnetodielectric (MD) effects of polycrystalline Y3Fe5-xSnxO12 compounds prepared by solid state reactions were systematically investigated. The substitution of Sn4+ leads to lattice expansion and the donation of excess electrons in ceramics, which affects the concentration of Fe2+, space charge, and electric dipole. As a result, as the amount of Sn dopant increases, so does saturation magnetization and permittivity in the low frequency band. The MD coefficient ([εr(H)?-?εr(0)]/εr(0)) of lightly doped samples (x?≤?0.05) is negative in the entire frequency band, reaching -2.3% at 350?MHz and 0.6 T for Y3Fe4.95Sn0.05O12 ceramics. The MD coefficient of heavily doped samples (x?>?0.05) is positive in the low frequency band, reaching 0.83% at 10?MHz and 0.6 T for Y3Fe4.925Sn0.075O12 ceramics, and then decreasing with the increasing frequency, gradually becoming negative in the high frequency band. A detailed explanation is provided based on the origin of permittivity. This study provides a new methodology according to which the MD materials may be designed in order to satisfy the requirements of engineering applications. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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