التفاصيل البيبلوغرافية
| العنوان: |
Dodecahedron lattice of rattling phenomenon, and microwave dielectric properties of yttrium aluminum garnet ceramics and its application verification for Wifi6E/7 patch and 6G resonant antennas. |
| المؤلفون: |
Liu, Huan1 (AUTHOR), Jiang, Yu1 (AUTHOR), Yu, Xueqing1 (AUTHOR) 42802@hdu.edu.cn, Mao, Minmin1 (AUTHOR), Liu, Bing1 (AUTHOR), Lu, Zhilun1,2 (AUTHOR) z.lu@leeds.ac.uk, Barzegar Bafrooei, Hadi1 (AUTHOR), He, Shuang3 (AUTHOR), Ren, Yingjie3 (AUTHOR), Taheri-nassaj, Ehsan4 (AUTHOR), Song, Kaixin1 (AUTHOR) kxsong@hdu.edu.cn |
| المصدر: |
Journal of the European Ceramic Society. Jun2024, Vol. 44 Issue 6, p3895-3902. 8p. |
| مصطلحات موضوعية: |
*CERAMICS, *YTTRIUM aluminum garnet, *DIELECTRIC properties, *ANTENNAS (Electronics), *RADIO technology, *PERMITTIVITY |
| مستخلص: |
In garnet phase ceramics Y 2.9 M 0.1 Al 4.9 Si 0.1 O 12 (M = Mg2+, Co2+, Zn2+, Mn2+, Ca2+, Sr2+, Ba2+), rattling effects occur when M = Mg2+, Co2+, Zn2+, Mn2+ ions with smaller ionic radius (<1Å) occupy the dodecahedron lattice lattices. This results in an abnormally high dielectric constant, in contrast to the larger ionic radius (>1 Å) of M = Ca2+, Sr2+ and Ba2+, which deviate from the theoretical values calculated using the Clausius-Mosotti formula according to each ion's polarizability. The optimal microwave dielectric properties for Y 2.9 Mg 0.1 Al 4.9 Si 0.1 O 12 was obtained by sintering at 1575 °C for 5 h (Q × f = 51,382 GHz, ε r = 9.74, and τ f = −30.12 ppm/°C). Additionally, a thermal stable Y 2.9 Mg 0.1 Al 4.9 Si 0.1 O 12 -6 wt%TiO 2 composite ceramic was developed. Based on this composite, a Wifi6E/7 patch antenna operating at 6.3 GHz and a millimeter-wave resonant antenna functioning at 27.1 GHz were designed and validated. This indicates the potential application prospects of garnet ceramics in 5G/6G radio communication technologies. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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