Vibrational spectroscopy and microwave dielectric properties of AY(2)Si(3)O(10) (A = Sr, Ba) ceramics for 5G applications
Vibrational spectroscopy and microwave dielectric properties of AY(2)Si(3)O(10) (A = Sr, Ba) ceramics for 5G applications
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用于 5G 应用的 AY(2)Si(3)O(10) (A = Sr, Ba) 陶瓷的振动光谱和微波介电性能
DOI：
10.1016/j.ceramint.2019.09.086
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发表时间：
2020
影响因子：
5.2
通讯作者：
Reaney Ian M.
中科院分区：
文献类型：
--
作者：
Lin Qianbi;Song Kaixin;Liu Bing;Bafrooei Hadi Barzegar;Zhou Di;Su Weitao;Shi Feng;Wang Dawei;Lin Huixin;Reaney Ian M.
采用传统高温固相反应法合成了AY2Si3O10(A=Sr,Ba)三硅酸盐陶瓷。 X射线衍射图谱和Rietveld精修表明AY2Si3O10(A=Sr, Ba)陶瓷分别属于具有Pī和P21/m空间群的三斜晶系和单斜晶系。采用拉曼光谱分析了[SiO4]四面体、[YO6]八面体和[(Sr/Ba)O8]多面体的振动模式。红外光谱拟合分析用于确定固有介电性能。 SrY2Si3O10和BaY2Si3O10的微波介电性能分别为εr=9.3、Qf=64100GHz、τf=-31ppm/°C和εr=9.5、Qf=65600GHz、τf=-28ppm/°C。如果 τf 可以进一步调整，这两种三硅酸盐陶瓷都被认为是 5G 和毫米波技术的潜在候选者。
AY2Si3O10(A = Sr, Ba) trisilicate ceramics were synthesized by traditional high temperature solid state reaction method. X-ray diffraction patterns and Rietveld refinement revealed that AY2Si3O10(A = Sr, Ba) ceramics belonged to triclinic and monoclinic crystal systems withPīandP21/mspace groups, respectively. The vibrational modes of [SiO4] tetrahedra, [YO6] octahedra and [(Sr/Ba)O8] polyhedra were analyzed by Raman spectroscopy. The infrared spectroscopy fitting analysis was used to determine intrinsic dielectric properties. Excellent microwave dielectric properties were measured for SrY2Si3O10and BaY2Si3O10with ɛr= 9.3, Qf = 64100 GHz, τf= −31 ppm/°C and ɛr= 9.5, Qf = 65600 GHz, τf= −28 ppm/°C, respectively. Both trisilicate ceramics are considered potential candidates for 5G and mm wave technology, provided τfcan be further tuned.